Eastern Mojave Vegetation
Images -- Species - Asteraceae

By Tom Schweich


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Images are organized by the topics listed at left. Click on a topic name to see images with that topic.

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Coll. No. 1293, Asteraceae

Photographed 9 September 2015.

Article records that use this photograph:

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Achillea millefolium

Coll. No. 2083, Achillea millifolium

Photographed 15 October 2019.

Article records that use this photograph:

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Inflorescence of Coll. No. 2083, Achillea millifolium

Scanned 15 October 2019.

Article records that use this photograph:

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Kalm (1762) mention of Achillea millefolium in Montreal, Canada.

It looks like there are two different fonts, one for the native Swedish, and another for the names of the plants.

Article records that use this photograph:

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Collection No. 503, Achillea millefolium

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

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Coll. No. 482, Achillea millefolium

The grid spacing is 1/4 inch.

Article records that use this photograph:

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Achillea millefolium, Collection No. 503

Photograph taken August 2, 2007 beside Bohler Creek.

Article records that use this photograph:

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Creekside habitat of Coll. No. 1251, Achillea millefolia

Photographed 26 July 2015.

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Habitat of Coll. No. 1485, Achillea millefolium

Photographed 6 July 2016.

Article records that use this photograph:

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Acroptilon repens

Max Lichter photograph of Acroptilon repens

©Max Lichter (CC BY-SA). Locality: unknown. URL: http://swbiodiversity.org/seinet/imagelib/imgdetails.php?imgid=19261 Accessed: 11 April 2020. Images are made available on SEINet under the Creative Commons Attribution-ShareAlike (CC BY-SA).

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Acroptilon repens.

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Agoseris aurantiaca purpurea

Coll. No. 2874, Agoseris aurantiaca var. purpurea.

Photographed 29 November 2022.

Plants of Colorado
Asteraceae

Agoseris aurantiaca (Hooker) Greene var. purpurea (A. Gray) Cronquist.   Orange-Flower Goat-Chicory.

West Tennessee Creek, Lake County, Colorado. Along an old, closed forest road on the north side of West Tennessee Creek, 770 m. southeast of Lily Lake, 16.0 km. north northwest of Leadville. 39.3478°N, 106.363°W. WGS 1984 Elev. 3177 m. Phyllaries imbricate, 3 mm. wide, ciliate distally, purple-blotched; cypselae gradually tapered to beak. Open ground, nine plants seen, not showy, easy to overlook. Distances measured from GNIS point features.

Collected by permit: Pike - San Isabel National Forest, 2022, issued: Mar 29, 2022, to: Tom Schweich.

Tom Schweich 2875. 19-Jul-2022

Article records that use this photograph:

        images/IMGQ5751sm.jpg

Agoseris glauca

Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow.

Photograph taken 5 July 2010.

Article records that use this photograph:

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Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow.

Photograph taken 5 July 2010.

Article records that use this photograph:

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Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow.

Photograph taken 5 July 2010.

Article records that use this photograph:

        images/IMGP0293sm.jpg

Agoseris glauca dasycephala

Coll. No. 3116, Agoseris glauca var. dasycephala.

Photographed 12 January 2024.

Plants of Colorado
Asteraceae

Agoseris glauca (Pursh) Raf. var. dasycephala (Torr. & A. Gray) Jeps.  Pale Goat-Chicory.

Unnamed Gulch, Lake County, Colorado. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. 39.2984°N, 106.31697°W. WGS 1984 Elev. 3095 m. Between the road and the creek to the south, open shrubland with Artemisia tridentata, Eriogonum umbellatum, and Dasophora fritucosa.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3116. 19-Jul-2023

Article records that use this photograph:

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Agoseris parviflora

Coll. No. 2925, Agoseris parviflora.

Photographed 28 October 2023.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Agoseris parviflora (Nutt.) D. Dietr.  Steppe Goat-Chicory.

Eagle Ridge, Jefferson County, Colorado. Local name for a small hogback composed of vertically-upturned Cretaceous-age Dakota Group between Deadman Gulch and US Highway 6, about 3.5 km. south of the GNIS location of Golden. 39.7316°N, 105.2141°W. WGS 1984 Elev. 1853 m. Teeth mostly in 5+ pairs; flower color yellow. Nearly flat soil along top of hogback, with Helianthus pumilis, Cercocarpus montanus, Penstemon virens, Alyssum simplex, Erodium cicutarium, and Bromus tectorum.

Collected by permit: City of Golden, 2023, issued: Mar 13, 2023, to: Tom Schweich.

Tom Schweich 2926. 28-May-2023

Location records that use this photograph:

Article records that use this photograph:

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Coll. No. 1101, Agoseris parviflora

Scanned 15 Jul 2015.

Location records that use this photograph:

Article records that use this photograph:

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Habitat of Coll. No. 1101, Agoseris parviflora

Photographed 3 May 2015.

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Article records that use this photograph:

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Ambrosia acanthicarpa

Coll. No. 2908, Ambrosia acanthicarpa.

Photographed 22 December 2022.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Ambrosia acanthicarpa Hook.  Flat-Spine Burr-Ragweed.

Delong Park, Jefferson County, Colorado. In planted native grass beds, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. 39.7489°N, 105.2083°W. WGS 1984 Elev. 1761 m. Not previously collected in or near Golden; unclear whether this Ambrosia was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022.

Collected by permit: City of Golden, 2022, issued: Mar 17, 2022, to: Tom Schweich.

Tom Schweich 2908. 18-Aug-2022

Article records that use this photograph:

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Ambrosia dumosa

Mix of staminate and pistillate flowers in inflorescence of Ambrosia dumosa

Scanned 1 October 2017.

Coll. No. 1571, 18 April 2017, characters observed: Perennial shrub, to 40 cm.; Stem, woody, densely short strigose when young; Leaves, petiole 10 mm., blade 16 mm × 13 mm. wide, pinnately lobed, short strigose; Phyllaries (staminate flowers), fused at base, in 1 series, #7, eglandular, tip acute; Flowers, 2 kinds in different heads, staminate flowers, #15, pistilate flowers, #2; Pappus, 0; Style, 2-branched, fused(?); Fruit, bur, 6 mm. × 6 mm. wide, ±spheric, spines, #15, 2 mm.

Article records that use this photograph:

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Overview of Coll. No. 1571, Ambrosia dumosa

Photographed 1 October 2017.

Article records that use this photograph:

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Ambrosia eriocentra

Leaf of Ambrosia eriocentra in the wash at Lobo Point.

Photographed November, 1990. Scanned 29 November 2020.

Article records that use this photograph:

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Ambrosia eriocentra in the wash at Lobo Point.

Photographed November, 1990. Scanned 29 November 2020.

Article records that use this photograph:

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Ambrosia eriocentra Wooly Bursage

Wash at Lobo Point.

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Ambrosia psilostachya

Coll. No. 1763, Ambrosia psilostachya

Photographed 12 January 2018

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Pistillate flower of Ambrosia psilostachya

Scanned 18 October 2014.

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Leaf of Ambrosia psilostachya

Scanned 18 October 2014.

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Coll. No. 1069, Ambrosia psilostachya

Photographed 15 October 2014.

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Coll. No. 1748, Ambrosia psilostachya

Photographed 8 January 2018.

Article records that use this photograph:

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Coll. No. 1068, Ambrosia psilostachya

Photographed 8 October 2014.

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Ambrosia salsola salsola

Coll. No. 2.3, Ambrosia salsola var. salsola

Scanned 10 October 2013.

Coll. No. 2.3, 16 Apr 1993, characters observed while keying: Leaf blade linear to thread-like, Head, pistillate, phyllaries 2; Bur, palea tips membraneous wings, wings of bur 2.8 mm. wide.

Article records that use this photograph:

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Ambrosia tomentosa

Coll. No. 3067, Ambrosia tomentosa.

Photographed 29 December 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Ambrosia tomentosa Nutt.  Skeleton-Leaf Bursage.

Guy Gulch, Jefferson County, Colorado. Just southeast of a concrete structure, across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. 39.7945°N, 105.3546°W. WGS 1984 Elev. 2345 m. Also collected nearby: Astragalus flexuosus, Silene latifolia, and Dracocephalum parviflorum.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3067. 12-Jul-2023

Article records that use this photograph:

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Ambrosia trifida

Coll. No. 3202, Ambrosia trifida.

Photographed 31 January 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Ambrosia trifida L.  Giant Ragweed.

Golden History Park, Jefferson County, Colorado. West end of Golden History Park, at the western entrance gate, 395 m. west of the GNIS location of Golden. 39.75469°N, 105.22556°W. WGS 1984 Elev. 1733 m. Most likely native to Golden, but found in an area of planted, non-native, vegetation.

Collected by permit: City of Golden, 2023, issued: Mar 13, 2023, to: Tom Schweich.

Tom Schweich 3202. 29-Aug-2023

Article records that use this photograph:

        images/IMGQ6095sm.jpg

Anaphalis margaritacea

Coll. No. 2972, Anaphalis margaritacea.

Photographed 27 November 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Anaphalis margaritacea (L.) Bentham & Hooker.  Western Pearly Everlasting.

Guy Gulch, Jefferson County, Colorado. Steep slope above Guy Gulch, southwest side of the creek and County Road 70, 380 m. south southeast of the ranch house, 15.6 km. (planar) northwest of the GNIS location of Golden. 39.7923°N, 105.353°W. WGS 1984 Elev. 2356 m. Very steep slope among Douglas fir.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 2972. 14-Jun-2023

Article records that use this photograph:

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Coll. No. 2972, Anaphalis margaritacea

Photographed 14 June 2023.

Article records that use this photograph:

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Coll. No. 2657, Anaphalis margaritacea

Photographed 29 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Anaphalis margaritacea (L.) Bentham & Hooker.  Western Pearly Everlasting.

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, crossed west to east by Bull Gulch, 72 m. west from the eastern boundary, 1.35 km. north northwest of the main gate, and 23.0 km. north northwest of the GNIS location of Golden. 39.908°N, 105.277°W. WGS 1984 Elev. 1965 m. Additional colonies seen further up the gulch. South bank of the gulch, in an area not scoured out in the floods of September 2013. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2657. 7-Aug-2021

Article records that use this photograph:

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Anisocoma acaulis

Coll. No. 824, Anisocoma acaulis

Photographed 31 May 2012.

Article records that use this photograph:

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Coll. No. 824, Anisocoma acaulis

Scanned 26 January 2013.

Article records that use this photograph:

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Antennaria

Habitat of Coll. No. 1257, Pseudognaphalium macounii

Photographed 26 July 2015.

Coll. No. 1257, 26 Jul 2015, characters observed: Annual (?) to 45 cm.; Leaves, cauline, alternate, 40 mm. × 4 mm. wide, decurrent, lance-linear, entire, stalked glandular, tomentose abaxially; Inflorescence, branched axial and terminal; Heads in tight clusters, disciform; Involucre, 4 mm.; Receptacle, epaleate; Phyllaries in 4+ series, hyaline; Pappus, bristles.

Article records that use this photograph:

        images/IMGQ1401sm.jpg

Antennaria microphylla

Coll. No. 3150, Antennaria microphylla

Photographed 26 July 2023.

Article records that use this photograph:

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Antennaria neglecta

Coll. No. 2834, Antennaria neglecta.

Photographed 28 October 2022.

Plants of Lippincott Ranch
Boulder and Jefferson Counties, Colorado
Asteraceae

Antennaria neglecta Greene.  Field Pussy-Toes.

Lippincott Ranch (North), Boulder County, Colorado. In shade along the north fork of Spring Brook, 2.56 km. north northwest of the main gate, 2.36 km. south southwest of the GNIS location of Eldorado Springs. 39.9164°N, 105.2793°W. WGS 1984 Elev. 2023 m. Leaves adaxial glabrous, abaxial tomentose. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Boulder OSMP, issued: May 27, 2022, to: Tom Schweich.

Tom Schweich, with John Vikery 2834. 2-Jul-2022

Article records that use this photograph:

        images/IMGQ5719sm.jpg

Antennaria parvifolia

Coll. No. 1909, Antennaria parvifolia

Scanned 29 November 2018.

Coll. No. 1909, 31 May 2018, characters observed: Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous.

Article records that use this photograph:

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Dissection of Coll. No. 1909, Antennaria parvifolia

Photographed 29 November 2018.

Coll. No. 1909, 31 May 2018, characters observed: Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous.

Article records that use this photograph:

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Coll. No. 2466, Antennaria parvifolia

Scanned 13 October 2021.

Plants of Colorado
Asteraceae

Antennaria parvifolia Nutt.  Small-Leaf Pussytoes.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1733°N, 105.3818°W. WGS 1984 Elev. 2534 m. Downed ponderosa pines, with Packera werneriifolia, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2466. 23-May-2021

Article records that use this photograph:

        images/TAS024660Oview.jpg

Flower parts of Coll. No. 2282, Antennaria parvifolia.

Scanned 30 October. The things to see here are: the phyllaries are green proximally and broadly white and scarious distally, the pappus is tangled, and the flowers appear to be staminate only.

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Habitat of Coll. No. 1128, Antennaria parvifolia

Photographed 1 June 2015.

The large herbs growing out of the grasses are Frasera speciosa.

Article records that use this photograph:

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Antennaria rosea

Coll. No. 2529, Antennaria rosea

Photographed 23 June 2021.

Plants of Colorado
Asteraceae

Antennaria rosea Greene.  Rosy Pussytoes.

Morrison Creek, Jefferson County, Colorado. Moist forest floor in the middle of an old road next to Morrison Creek, just north of the Colorado Trail, 0.78 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3331°N, 105.285°W. WGS 1984 Elev. 2337 m. Very tall, very red, but small involucres.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2529. 23-Jun-2021

Article records that use this photograph:

        images/20210623_125336sm.jpg

Coll. No. 2529, Antennaria rosea

Photographed 16 November 2021.

Plants of Colorado
Asteraceae

Antennaria rosea Greene.  Rosy Pussytoes.

Morrison Creek, Jefferson County, Colorado. Moist forest floor in the middle of an old road next to Morrison Creek, just north of the Colorado Trail, 0.78 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3331°N, 105.285°W. WGS 1984 Elev. 2337 m. Very tall, very red, but small involucres.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2529. 23-Jun-2021

Article records that use this photograph:

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Rosette of Antennaria rosea.

Photographed 9 September 2015.

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Mat-forming rosettes, probably Antennaria rosea

Photographed 9 September 2015.

Article records that use this photograph:

        images/IMGQ1628sm.jpg

Coll. No. 1083, Antennaria rosea

Scanned 14 June 2015.

Coll. No. 1083, 25 April 2015, characters observed: Perennial herb, to 9 cm., stoloniferous 4-5 cm., forming loose mats in wet muddy soil, all sixteen plants collected pistillate (gynoecious?); Leaves, simple, white tomentose both sides, basal, 35 mm. × 9 mm wide, oblanceolate, cauline, 11-13 mm., linear; Inflorescence, >> basal leaves; Involucre, 5.5-7.0 mm.; Bracts (phyllaries), 5.0-6-5 mm. × 1.1-0.7 mm. wide, green at base, purplish band in middle, tips, white, scarious.

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Arctium minus

Coll. No. 2425, Arctium minus.

Photographed 29 December 2020.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Arctium minus Bernh.  Lesser Burdock.

Deadman Gulch, Jefferson County, Colorado. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, on a bank of the creek, 3.24 km. south of the GNIS location of Golden. 39.7336°N, 105.2156°W. WGS 1984 Elev. 1792 m. Also seen in several other places along Deadman Gulch. Colorado Noxious Weed List C.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2425. 17-Aug-2020

Article records that use this photograph:

        images/IMGQ5291sm.jpg

Arnica chamissonis

Coll. No. 510, Arnica chamissonis

Scanned 17 March 2011. Background grid is 10 x 10 to the inch.

Coll. No. 510, 2 Aug 2007, characters observed: Herbaceous perennial, 60 cm.; Stem, proximal axils white hairy; Leaves opposite, petiole 65 mm, blade 68 mm. × 15 mm. wide, length 4.5 × width; Inflorescence 2-3 heads; Heads, 2 kinds of flowers; Phyllaries in 2 series, 8 mm., outer ≥ inner, stalked glandular, adaxial face glabrous, hair tufted near tip, tip acute; Receptacle epaleate; Ray corolla yellow; Disc corolla should be stalked-glandular but can't see; Pappus of well-developed bristles on both kinds of flowers, 6 mm., white, short plumose; Achene, sparsely glandular.

Article records that use this photograph:

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Arnica cordifolia

Coll. No. 2530, Arnica cordifolia

Photographed 16 November 2021.

Plants of Colorado
Asteraceae

Arnica cordifolia Hook.  Heart-Leaf Leopardbane.

Morrison Creek, Jefferson County, Colorado. Moist shaded forest floor between an old road and Morrison Creek, north of the Colorado Trail, 0.77 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3331°N, 105.2848°W. WGS 1984 Elev. 2358 m. Also collected here: Antennaria rosea in the middle of the road.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2530. 23-Jun-2021

Article records that use this photograph:

        images/IMGQ5472sm.jpg

Coll. No. 3029, Arnica cordifolia.

Photographed 17 December 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Arnica cordifolia Hook.  Heart-Leaf Leopardbane.

Guy Gulch, Jefferson County, Colorado. Just inside the mouth of a small gulch tributary to Guy Gulch, southwest side of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. 39.8009°N, 105.3655°W. WGS 1984 Elev. 2417 m. More seen further up the gulch.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3029. 3-Jul-2023

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Coll. No. 2530, Arnica cordifolia

Photographed 23 June 2021.

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Arnica fulgens

Woolly hairs in axils of basal leaves of Coll. No. 2038, Arnica fulgens

Scanned 31 July 2019.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Lippincott Ranch, Jefferson County, Colorado. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south of Bull Gulch approximate centroid of parcel, 22.4 km. north northwest of the GNIS location of Golden. 39.9038°N, 105.2788°W. WGS 1984 Elev. 2053 m. Open prairie in small saddle.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2038. 26-May-2019

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Coll. No. 1119, Arnica fulgens

Scanned 24 September 2015.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 110 m. east of Plainview Road. 39.889°N, 105.2604°W. Elev. 1943 m. Very wet, running water among grasses and sedges.

Collected by permit: Jefferson County Open Space, 2015, issued: Dec 11, 2014, to: Tom Schweich.

Tom Schweich 1119. 28-May-2015

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Coll. No. 1371, Arnica fulgens

Photographed 29 May 2016.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, then 1.4 mi. north on Plainview Road. 15.8 km. north northwest of the GNIS location of Golden. 39.8941°N, 105.2629°W. WGS 1984 Elev. 1941 m. Cauline leaves opposite. Moist east-facing slope with deep grass.

Collected by permit: Jefferson County Open Space, 2016, issued: Mar 1, 2016, to: Tom Schweich.

Tom Schweich 1371. 29-May-2016

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Flower head of Coll. No. 1371, Arnica fulgens

Scanned 24 November 2016.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, then 1.4 mi. north on Plainview Road. 15.8 km. north northwest of the GNIS location of Golden. 39.8941°N, 105.2629°W. WGS 1984 Elev. 1941 m. Cauline leaves opposite. Moist east-facing slope with deep grass.

Collected by permit: Jefferson County Open Space, 2016, issued: Mar 1, 2016, to: Tom Schweich.

Tom Schweich 1371. 29-May-2016

Perennial herb of wetlands or moist areas, to 35 cm., glandular hairy throughout; Leaves, mostly basal and few cauline, basal, axils with 5 mm. brown wavy hair, petiole 70 mm. + blade 60 mm. × 12 mm. wide, 5 × longer than wide, cauline, opposite, sessile, ±2 pair, much reduced; Inflorescence, single heads on peduncle to 80 mm., flowers of two kinds; Involucre, 13 mm. × 22 mm. wide; Phyllaries, 2 ±equal series, 11-12 mm.× 3 mm. wide, green with dark tips; Receptacle epaleate; Rays, #12, fertile, tube 3 mm. + blade 16 mm. × 7 mm. wide = 19 mm., corolla yellow; Disc flowers, tube 7 mm. + lobes ≤1 mm. = 8 mm.; Pappus, bristles, 9 mm., white; Anther, yellow; Achene, 5 mm., short hairy. Described from Coll. No. 1119, 28 May 2015, and Coll. No. 1371, 29 May 2016. Subtribe Arnicinae is a subtribe to Madiinae (tarweeds) and Hulseinae, which contains both Hulsea and Eatonella, both common in the Mono Lake basin.

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Coll. No. 1119, Arnica fulgens

Scanned 24 September 2015.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Shining Leopardbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 110 m. east of Plainview Road. 39.889°N, 105.2604°W. Elev. 1943 m. Very wet, running water among grasses and sedges.

Collected by permit: Jefferson County Open Space, 2015, issued: Dec 11, 2014, to: Tom Schweich.

Tom Schweich 1119. 28-May-2015

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Arnica mollis

Coll. No. 2006, Arnica mollis

Photographed 27 January 2019.

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Arnica parryi

Coll. No. 2010, Arnica parryi

Photographed 27 January 2019.

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Arnica sororia

Arnica sororia in Sagehen Meadow.

Photograph taken 26 July 2010 in Sagehen Meadow.

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Habitat of Arnica sororia in Sagehen Meadow.

Photograph taken 26 July 2010 in Sagehen Meadow.

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Arnica sororia in Sagehen Meadow.

Photograph taken 26 July 2010 in Sagehen Meadow.

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Coll. No. 692, Arnica sororia

Scanned 10 Nov 2011.

Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.

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Coll. No. 692, Arnica sororia

Scanned 10 Nov 2011.

Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.

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Coll. No. 692, Arnica sororia

Scanned 10 Nov 2011.

Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.

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Coll. No. 692, Arnica sororia

Scanned 10 Nov 2011.

Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.

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Artemisia absinthium

Coll. No. 2917, Artemisia absinthium.

Photographed 23 December 2022.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Artemisia absinthium L.  Common Wormwood.

407 Garden Street, Jefferson County, Colorado. On the shoulder of the road at 407 Garden Street, 1.39 km. north of the GNIS location of Golden. 39.765°N, 105.2234°W. WGS 1984 Elev. 1756 m. Leaves 2-3 times pinnatifid, receptacles hairy. Also here: Artemisia ludoviciana, Cirsium arvensis. Ratibida columnifera, Convolvulus arvensis, Linum lewisii, and Elymus repens. Naturalized at edge of residential street, more in nearby yard, but not planted by this homeowner. All removed by homeowner following identification. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2022, issued: Mar 17, 2022, to: Tom Schweich.

Tom Schweich, with Cathy Hansen-Stamp 2917. 21-Sep-2022

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Artemisia absinthum

Coll. No. 2917, Artemisia absinthum.

Photographed 21 September 2022.

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Artemisia borealis

Habitat of Coll. No. 3101, Artemisia borealis, edge of flood plain of West Tennessee Creek.

Photographed 18 July 2023.

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Artemisia borealis borealis

Coll. No. 2881, Artemisia borealis var. borealis.

Photographed 2 December 2022.

Plants of Colorado
Asteraceae

Artemisia borealis Pall. ssp. borealis.  Boreal Wormwood.

(Syn: A. campestris L. var. purshii (Besser ex Hook.) Cronquist, Oligosporus groenlandicus (Hornemann) Á. Löve & D. Löve)

West Tennessee Creek, Lake County, Colorado. Edge of forest on west-facing slope above West Tennessee Creek, 870 m. southeast of Lily Lake, 15.9 km. north northwest of Leadville. 39.3471°N, 106.3625°W. WGS 1984 Elev. 3166 m. Dry gravelly slope under a pine. Distances measured from GNIS point features.

Collected by permit: Pike - San Isabel National Forest, 2022, issued: Mar 29, 2022, to: Tom Schweich.

Tom Schweich 2881. 19-Jul-2022

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Artemisia campestris

Leaves of Artemisia campestris (?)

Photographed 16 May 2021.

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Inflorescence of Coll. No. 1767, Artemisia campestris

Photographed 13 January 2018.

Coll. No. 1767, 1 Sep 2017, characters observed: Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked.

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Coll. No. 1767, Artemisia campestris

Photographed 13 January 2018.

Coll. No. 1767, 1 Sep 2017, characters observed: Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked.

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Artemisia cana bolanderi

Coll. No. 716, Artemisia cana var. bolanderi

Scanned 20 Nov 2011.

Coll. No. 715, 20 Nov 2011, characters observed while keying: Subshrub woody at base, 30-35 cm tall, unarmed; Leaves linear, entire, 15 mm, < 2 mm wide; Heads erect, 3 mm dia. (less than 5 mm per TJM1, 2, & D).

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Artemisia dracunculus

Coll. No. 1754, Artemisia dracunculus

Scanned 10 January 2018.

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Coll. No. 1754, Artemisia dracunculus

Photographed 10 January 2018.

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Artemisia frigida

Coll. No. 1067, Artemisia frigida

Photographed 8 October 2014.

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  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Artemisia frigida.
  • Golden Cliffs Trail, Golden, Jefferson County, Colorado: near rim.
  • Field Notes: Coll. No. 1067.

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Coll. No. 1067, Artemisia frigida

Scanned 8 October 2014.

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  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Artemisia frigida.
  • Golden Cliffs Trail, Golden, Jefferson County, Colorado: near rim.
  • Field Notes: Coll. No. 1067.

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Coll. No. 1067, Artemisia frigida

Scanned 8 October 2014.

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Artemisia ludoviciana

Something is parasitizing my Artemisia

Scanned 13 Jun 2020.

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Coll. No. 1281, Artemisia ludoviciana

Photographed 15 January 2016

In Weber & Wittmann (2012) and Ackerfield (2015) will key to Artemisia ludoviciana Nutt. var. ludoviciana, because of the entire leaves. However, in FNANM, revolute margins lead one away from subsp. ludoviciana, perhaps in the direction of subsp. mexicana (Willdenow ex Sprengel) D. D. Keck. Most of the collections of A. ludoviciana Nutt. in Jefferson County, Colorado, are undetermined as to infraspecific taxa, and considerable variation in leaf margins and lobes can be seen in the specimens.

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Entire leaves of Coll. No. 1281, Artemisia ludoviciana

Scanned 15 January 2016.

The leaf margins are entire and revolute.

In Weber & Wittmann (2012) and Ackerfield (2015) this collection will key to Artemisia ludoviciana Nutt. var. ludoviciana, because of the entire leaves. However, in FNANM, revolute margins lead one away from subsp. ludoviciana, perhaps in the direction of subsp. mexicana (Willdenow ex Sprengel) D. D. Keck. Most of the collections of A. ludoviciana Nutt. in Jefferson County, Colorado, are undetermined as to infraspecific taxa, and considerable variation in leaf margins and lobes can be seen in the specimens.

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        images/TAS012810Lvs.jpg

Artemisia ludoviciana incompta

Coll. No. 3190, Artemisia ludoviciana ssp. incompta.

Photographed 28 January 2024.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck.  White Sagebrush.

Guy Gulch, Jefferson County, Colorado. Southwest side of County Road 70 and the gulch, 660 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. 39.79756°N, 105.36092°W. WGS 1984 Elev. 2422 m. Small plants, leaves deeply lobed, involucres small, in flower. Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, also collected here: Symphyotrichum porteri, Allium cernuum, Muhlenbergia montana, and Thinopyrum intermedium.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3190. 31-Jul-2023

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        images/IMGQ6082sm.jpg

Leaves of Coll. No. 2688, Artemisia ludoviciana var. incompta

Photographed 5 February 2022.

Plants of Colorado
Asteraceae

Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck.  White Sagebrush.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9577°N, 106.0123°W. WGS 1984 Elev. 2860 m. Open hillside with ponderosa pines, collected nearby: Hymenoxys richardsonii var. floribunda, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2688. 16-Aug-2021

Herbaceous, rhizomatous, lvs. all cauline, ±20 mm., once pinnatifid, infl. narrow panicle, receptacle naked.

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Coll. No. 2688, Artemisia ludovicianaincompta

Photographed 5 February 2022.

Plants of Colorado
Asteraceae

Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck.  White Sagebrush.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9577°N, 106.0123°W. WGS 1984 Elev. 2860 m. Open hillside with ponderosa pines, collected nearby: Hymenoxys richardsonii var. floribunda, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2688. 16-Aug-2021

Herbaceous, rhizomatous, lvs. all cauline, ±20 mm., once pinnatifid, infl. narrow panicle, receptacle naked.

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        images/IMGQ5589sm.jpg

Artemisia ludoviciana ludoviciana

Coll. No. 3191, Artemisia ludoviciana ssp. ludoviciana.

Photographed 29 January 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Artemisia ludoviciana Nutt. ssp. ludoviciana.  White Sagebrush.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southeast corner of Survey Field, 2.45 km. (geodesic) south of the GNIS location of Golden 39.73354°N, 105.21837°W. WGS 1984 Elev. 1819 m. Perennial herb, rhizomatous, not woody, infl. a narrow panicle, leaves entire. Highest mixed grass prairie near Rocky Mountain Front Range scarp, also nearby: Asclepias pumila, Ambrosia psilostachya, Artemisia dracunculus, Liatris punctata, and Evolvulus nuttallianus.

Collected by permit: Colorado School of Mines, 2023, issued: May 9, 2023, to: Tom Schweich.

Tom Schweich 3191. 27-Aug-2023

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        images/IMGQ6083sm.jpg

Coll. No. 898, Artemisia ludoviciana ssp. ludoviciana

Photographed 25 August 2013.

Coll. No. 898, 24 August 2012, characters observed while keying: Perennial herb, to 40 cm, unarmed, spreading by rhizomes; Leaf tomentose abaxially, sparse tomentose adaxially, proximal wedge-shaped, 40 mm × 15 mm wide, 3+-toothed, ≤⅓ leaf-width, distal lanceolate, entire;

Frequency and depth of leaf lobing distinguishes between ssp. ludoviciana and ssp. incompta. These leaves are neither 2°-divided, nor deeper than ⅓-width, nor divided nearly to the mid-rib. Therefore, ssp. ludoviciana is applied rather than ssp. incompta.

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        images/IMG_1630sm.jpg

Coll. No. 898, Artemisia ludoviciana ssp. ludoviciana

Scanned 25 August 2013.

Coll. No. 898, 24 August 2012, characters observed while keying: Perennial herb, to 40 cm, unarmed, spreading by rhizomes; Leaf tomentose abaxially, sparse tomentose adaxially, proximal wedge-shaped, 40 mm × 15 mm wide, 3+-toothed, ≤⅓ leaf-width, distal lanceolate, entire;

Frequency and depth of leaf lobing distinguishes between ssp. ludoviciana and ssp. incompta. These leaves are neither 2°-divided, nor deeper than ⅓-width, nor divided nearly to the mid-rib. Therefore, ssp. ludoviciana is applied rather than ssp. incompta.

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        images/TAS008980Lf.jpg

Asteraceae Erigeron

Coll. No. 2724, Erigeron sp. (?) as it came out of the press.

Photographed 1 Sep 2021.

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Asteraceae Sonchus asper

Voucher of my Coll. No. 2414 Sonchus asper at COLO.

Usage Rights: CC BY-NC (Attribution-Non-Commercial)

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        images/TAS024240Oviewsm.jpg

Bahiopsis parishii

Coll. no. 246, Bahiopsis parishii

Scanned 15 Jan 2014.

Coll. No. 246, 5 June 2000, characters observed: Perennial (assumed), to 40 cm.; Leaves, basal unknown, cauline present; Phyllaries, in 2 series, ±equal, abruptly narrowed at middle, not subtending ray flowers; Receptacle, flat, paleate, palea folded around disk flower ovary; Flowers, of two kinds, heads radiate; Rays, yellow, sterile, style 0, pappus of short scales; Disk, pappus of short scales and 2 long scales; Fruit, compressed, hairy, but margin not ciliate.

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        images/TAS002460Oview.jpg

Baileya multiradiata

Coll. No. 337.1, Baileya multiradiata

Photographed 24 October 2013.

Coll. No. 337.1, 20 Apr 2004, characters observed while keying: Annual (biennial or short-lived perennial), to 40 cm., ±gray-tomentose, scapose; Leaves alternate; Inflorescence, heads solitary, flowers of two kinds, some with strap-shaped corollas; Involucre 6 mm.; Phyllaries, in 2+ series, slightly overlapping, ±equal, erect; Receptacle, hemispheric, epaleate; Pappus 0; Ray flowers, many, corolla, yellow, 13 mm. × 9 mm. wide, 3-lobed, when dry persistent papery reflexed; Fruit achene, 3.5 mm., ±equally ribbed.

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        images/IMGQ0085sm.jpg

Partially dissected head of Coll. No. 291, Baileya multiradiata

Scanned 26 Jan 2014.

Coll. No. 291, 26 May 2001, characters observed: Perennial, to 50 cm., gray tomentose; Leaves, alternate, petiole 40 mm. + blade 25 mm., ovate, pinnate-lobed; Inflorescence, composed of 2 kinds of flowers, Head, hemispheric, radiate; Phyllaries, in 2 series, ±equal, erect, overlapping, long spreading hairs; Receptacle epaleate; Ray, #32+, corolla, 13 mm., yellow, prominently 3-lobed, persistent when dry, papery, reflexed; Pappus, 0; Fruit, achene, ±smooth (minutely papillate on ribs).

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Lower leaf of Coll. No. 291, Baileya multiradiata

Scanned 26 Jan 2014.

Coll. No. 291, 26 May 2001, characters observed: Perennial, to 50 cm., gray tomentose; Leaves, alternate, petiole 40 mm. + blade 25 mm., ovate, pinnate-lobed; Inflorescence, composed of 2 kinds of flowers, Head, hemispheric, radiate; Phyllaries, in 2 series, ±equal, erect, overlapping, long spreading hairs; Receptacle epaleate; Ray, #32+, corolla, 13 mm., yellow, prominently 3-lobed, persistent when dry, papery, reflexed; Pappus, 0; Fruit, achene, ±smooth (minutely papillate on ribs).

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        images/TAS002910Lf.jpg

Balsamorhiza sagittata

Coll. No. 2252, Balsamorhiza sagittata

Photographed 30 April 2020.

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Coll. No. 2252, Balsamorhiza sagittata

Photographed 30 April 2020.

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Voucher of Coll. No. 2252, Balsanorhiza sagittata

Photographed 16 November 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Balsamorhiza sagittata (Pursh) Nutt.  Arrow-Leaf Balsamroot.

Tin Cup Ridge, Jefferson County, Colorado. Lower slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, a hogback at the base of the Rocky Mountain Front Range, 6.63 km. south of the GNIS location of Golden. 39.7134°N, 105.2044°W. WGS 1984 Elev. 1898 m. About 24 plants here, about half of which are in bloom. Another colony of 60-100 plants a little higher on the hogback. Usually described as a western slope plant. Perhaps planted here. Regardless, it is naturalized and spreading, if not native.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2252. 30-Apr-2020

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        images/IMGQ5224sm.jpg

Collection No. 782, Balsamorhiza sagittata

Photograph taken 22 June 2011.

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Flowers (Balsamorhiza sagittata) along road in burned area.

Photograph taken 15 Jul 2010.

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Coll. No. 1109, Balsamorhiza sagittata

Photographed 14 May 2015.

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Arrow-Leaf Balsamroot (Balsamorhiza sagittata in bloom along F. R. 01N17

Photographed 20 May 2013.

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        images/IMG_1427sm.jpg

Coll. No. 956, Balsamorhiza sagittata

Photographed 22 May 2013.

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        images/IMG_1462sm.jpg

Coll. No. 956, Balsamorhiza sagittata

Scanned on Groundhog's Day, 2 Feb 2014.

Coll. No. 956, 22 May 2013, characters observed: Perennial herb, to 50 cm.; Leaves, mostly basal, 20 cm. × 12 cm, widely triangular, base sagittate, tomentose, cauline much reduced; Inflorescence, radiate, composed of 2 kinds of flowers, some strap-shaped; Phyllaries, in 2+ series, not all subtending ray flowers, eglandular, bases tomentose; Receptacle, paleate; Paleae, folded, partially surrounding disk flower ovary; Rays, yellow, fruiting, fruit 9 mm. + corolla 32 mm. × 11 mm.; Pappus 0.

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        images/TAS009560Infl.jpg

Disc flowers of Coll. No. 1109, Balsamorhiza sagittata

Scanned 31 August 2015.

(a) Disarticulated disc flower with stamens and stigmas.
(b) Achene, adaxial side with palea partially folded around front.
(c) Intact disc flower, adaxial side, with palea partially folded around the achene, corolla, stamens exserted, stigmas not exserted yet.
(d) Achene and palea, abaxial side.

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        images/TAS01109Disc.jpg

Inflorescence head of Coll. No. 1109, Balsamorhiza sagittata

Scanned 31 August 2015.

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        images/TAS011090Head.jpg

Coll. No. 1109, Balsamorhiza sagittata

Scanned 31 August 2015.

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        images/TAS011090Leaf.jpg

Coll. No. 782, Balsamorhiza sagittata

Scanned 24 Jan 2012.

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        images/TAS007820Oview.jpg

Coll. No. 1109, Balsamorhiza sagittata

Scanned 31 August 2015.

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        images/TAS011090Infl.jpg

Bidens frondosa

Various flower parts of Coll. No. 2202, Bidens frondosa

Scanned 4 February 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Bidens frondosa L.  Devil's Beggartick.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 290 m. west to a small reservoir. 39.8865°N, 105.2644°W. WGS 1984 Elev. 1956 m. Discoid composite; in delta gravel of small reservoir.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2202. 27-Aug-2019

Coll. No. 2202, 27 August 2019, characters observed: Herbs, 18-28 cm.; Leaves, basal, unknown, cauline, opposite, 50 mm. × 40 mm. wide, pinnately compound, leaflets, #3, 25 mm. × 12 mm. wide, margin, serrate; Inflorescence, head enclosed in an involucre, 5-6 mm. wide; Phyllaries, outer, #5, 12 mm. × 2 mm. wide, green, inner, many, 5.5 mm. × 2.5 mm. wide, brown, margin, scarious (similar to the paleae); Receptacle, paleate; Paleae, 5 mm. × 1.7 mm. wide, margin, scarious; Corolla, 1.5 mm., orange-yellow; Pappus, #2, barbed awns, 1.5 mm.; Achene, 2-5-2.8 mm. × 1.5 mm. wide, very flat, hairy.

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        images/TAS022020Flsm.jpg

Coll. No. 2202, Bidens frondosa

Photographed 4 February 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Bidens frondosa L.  Devil's Beggartick.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 290 m. west to a small reservoir. 39.8865°N, 105.2644°W. WGS 1984 Elev. 1956 m. Discoid composite; in delta gravel of small reservoir.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2202. 27-Aug-2019

Coll. No. 2202, 27 August 2019, characters observed: Herbs, 18-28 cm.; Leaves, basal, unknown, cauline, opposite, 50 mm. × 40 mm. wide, pinnately compound, leaflets, #3, 25 mm. × 12 mm. wide, margin, serrate; Inflorescence, head enclosed in an involucre, 5-6 mm. wide; Phyllaries, outer, #5, 12 mm. × 2 mm. wide, green, inner, many, 5.5 mm. × 2.5 mm. wide, brown, margin, scarious (similar to the paleae); Receptacle, paleate; Paleae, 5 mm. × 1.7 mm. wide, margin, scarious; Corolla, 1.5 mm., orange-yellow; Pappus, #2, barbed awns, 1.5 mm.; Achene, 2-5-2.8 mm. × 1.5 mm. wide, very flat, hairy.

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        images/IMGQ5128sm.jpg

Brickellia californica

Brickellia californica growing in the cliffs.

Photographed 22 September 2020.

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        images/20200922_094733sm.jpg

Brickellia californica im bloom.

Photographed 26 September 2023.

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        images/20230926_094934sm.jpg

Collection No. 148 (Brickellia californica)

Collected at Lobo Point.

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        images/tas001480.jpg

Brickellia califorica as seen below the cliffs of North Table Mountain.

Photographed 13 October 2015.

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        images/IMGQ1781sm.jpg

Coll. No. 1546, Brickellia californica

Scanned 21 January 2017.

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        images/TAS015460Oview.jpg

Brickellia californica as seen below the cliffs on North Table Mountain.

Photographed 13 October 2015.

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        images/IMGQ1780sm.jpg

Brickellia eupatorioides

Brickellia eupatorioides in fruit.

Photographed 29 September 2023.

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        images/20230929_133232sm.jpg

General location of Coll. No. 3218, Brickellia eupatorioides.

Photographed 12 September 2018. This area was mowed by adjacent homeowners from 2007 to 2018.

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        images/20230912_132302sm.jpg

Coll. No. 2740, Brickellia eupatorioides

Photographed 16 February 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Brickellia eupatorioides (L.) Shinners.  False Boneset.

Apex Park - Northern Parcel, Jefferson County, Colorado. South-facing slope overlooking an unnamed gulch draining through Stonebridge HOA, very near the parcel boundary, 4.36 km. south of the GNIS location of Golden. 39.7255°N, 105.2185°W. WGS 1984 Elev. 1869 m.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with Cindy Trujillo 2740. 1-Sep-2021

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        images/IMGQ5617sm.jpg

Coll. No. 3218, Brickellia eupatorioides.

Photographed 3 February 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Brickellia eupatorioides (L.) Shinners.  False Boneset.

Schweich Hill, Jefferson County, Colorado. Near the northern border of Schweich Hill, in the eastern section that was mowed by neighbors for about twenty years, 1.75 km. (geodesic) north northwest of the GNIS location of Golden. 39.76885°N, 105.23204°W. WGS 1984 Elev. 1798 m. 20-30 plants mostly concentrated in a 10 m x 10 m patch, scattered in Bromus inermis with Artemisia dracunculus, Ericameria nauseosa var. graveolens, and Liatris punctata. Mowing occurred from approximately 2007 to 2018. Other collections may identify this location as “North Washington Open Space.”

Collected by permit: City of Golden, 2023, issued: Mar 13, 2023, to: Tom Schweich.

Tom Schweich 3218. 12-Sep-2023

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        images/IMGQ6106sm.jpg

Coll. No. 1553, Brickellia eupatorioides

Photographed 23 January 2017.

North Table Mountain, adjacent to the North Table Loop, 285 m. north of the USBR monument designated “North Table,” 1.8 km. north of the GNIS location of Golden. 39.7716°N, 105.2182°W. WGS 1984 Elev. 1953 m. Common in bed of ephemeral stream, in an upper portion of a watercourse draining southeast to Clear Creek through an unamed canyon. Many Eriogonum alatum at this location.

Coll. No. 1553, 1 Sep 2016, characters observed: Perennial herb, to 40 cm.; Leaves, alternate, short-petioled (2 mm.), 48 mm. × 7 mm. wide, lanceolate, tip obtuse, margin entire, glandular-punctate, sparsely strigose; Inflorescence, corymbiform, heads in groups of 4-5; Involucre, 8.5 mm. × 6 mm. wide; Phyllaries, 3+ series, graduated, 2-8.5 mm. × 0.5 mm. wide, prominently veined “longitudinally striate,” margin scarious, tip acuminate to spinulose; Receptacle, epaleate; Disk flowers, #19, corolla, 7 mm., yellow; Pappus, plumose bristles, 6 mm.; Cypsela, many ribs (maybe 10).

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        images/IMGQ3535sm.jpg

Coll. No. 1758, Brickellia eupatorioides

Photographed 12 January 2018.

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        images/IMGQ4539sm.jpg

Flower head of Coll. No. 1758, Brickellia eupatorioides

Scanned 12 January 2018.

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        images/TAS017580Hd.jpg

Brickellia grandiflora

Flower head of Coll. No. 2743, Brickellia grandiflora.

Photographed 17 February 2022.

Note slender appendage at tip of outer phyllaries.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Brickellia grandiflora (Hook.) Nutt.  Tasselflower Brickellbush.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, 1.11 km. west northwest of the main gate, 22.3 km. north northwest of the GNIS location of Golden. 39.9023°N, 105.2826°W. WGS 1984 Elev. 2078 m. On loose rock of the embankment below the Union Pacific Railroad, in the partial shade of a cottonwood and rocky mountain maples. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with Cindy Trujillo & John Vickery 2743. 7-Sep-2021

Article records that use this photograph:

        images/TAS027430Phyl.jpg

Brickellia sp.

Brickellia sp. From southwestern Utah.

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        images/280Briund.jpg

Carduus nutans

Carduus nutans rosette.

Photographed 24 April 2024.

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Coll. No. 2551, Carduus nutans

Photographed 24 November 2021.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Carduus nutans L.  Nodding Plumeless Thistle.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7248°N, 105.2201°W. WGS 1984 Elev. 1883 m. Grasslands below foothills scrub, collected nearby: Helianthus pumilus, Heterotheca villosa, Sphaeralcea coccinea, Linaria dalmatica, and Thinopyrum intermedium. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich 2551. 7-Jul-2021

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        images/IMGQ5498sm.jpg

Coll. No. 1711, Carduus nutans

Photographed 30 December 2017.

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        images/IMGQ4516sm.jpg

Carthamus lanatus

Stanley Smookler collection of Carthamus lanatus

©reserved Denver Botanic Gardens URL: http://swbiodiversity.org/seinet/collections/individual/index.php?occid=3057231&clid=0 Accessed 11 April 2020. Usage Rights: CC0 1.0 (Public-domain)

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Carthamus lanatus.

        images/280Carlan_Smookler504.jpg

Centaurea calcitrapa

Collection No. 190, Centaurea calcitrapa, purple starthistle.

Grid is 10x10 to the inch.

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        images/TAS001900oview.jpg

Centaurea diffusa

Coll. No. 2676.3, Centaurea diffusa

Photographed 2 February 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Centaurea diffusa Lam.  Diffuse Knapweed.

Tin Cup Ridge, Jefferson County, Colorado. Lower part of the east base of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.3 km. south southeast of the GNIS location of Golden. 39.714°N, 105.2042°W. WGS 1984 Elev. 1883 m. Phyllaries chartaceous and green with faint purple mottling, with 1 mm. central spine, flowers white, pappus of short scales. One of three collections made here; most have white flowers, some have purple flowers.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with Cindy Trujillo 2676.2 10-Aug-2021

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        images/IMGQ5584sm.jpg

Coll. No. 1233, Centaurea diffusa

Scanned 17 December 2015.

Coll. No. 1233, 20 Jul 2015, characters observed: Biennial/Perennial herb, to 50 cm.; Leaves, cauline, alternate, 30 mm. × 12 mm. wide, pinnately lobed, much reduced and entire above, spine-tipped, margins not spiny; Inflorescence, heads borne singly, flowers of one kind; Involucre, 10 mm.; Phyllaries, 4+ series, graduated, 3.5-10.0 mm., all spine tipped, outer and middle with marginal fringe spines; Receptacle, flat, epaleate, bristly; Disk flowers, inner bisexual, Corolla, tube 7.5 mm. + lobes 3 mm., white; Pappus, 0, or very thin ring of scales.

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        images/TAS012330Oview.jpg

Coll. No. 1233, Centaurea diffusa

Scanned 17 December 2015.

Coll. No. 1233, 20 Jul 2015, characters observed: Biennial/Perennial herb, to 50 cm.; Leaves, cauline, alternate, 30 mm. × 12 mm. wide, pinnately lobed, much reduced and entire above, spine-tipped, margins not spiny; Inflorescence, heads borne singly, flowers of one kind; Involucre, 10 mm.; Phyllaries, 4+ series, graduated, 3.5-10.0 mm., all spine tipped, outer and middle with marginal fringe spines; Receptacle, flat, epaleate, bristly; Disk flowers, inner bisexual, Corolla, tube 7.5 mm. + lobes 3 mm., white; Pappus, 0, or very thin ring of scales.

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        images/TAS012330Head.jpg

Centaurea solstitialis

Coll. No. 880, Centaurea solstitialis

Scanned 10 July 2013.

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        images/TAS008800Oview.jpg

Habitat of Coll. No. 880 Centaurea solstitialis.

Photographed 10 August 2012.

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        images/IMG30563sm.jpg

Centromadia pungens pungens

Coll. No. 878, Centromadia pungens var. pungens

Scanned 10 July 2013.

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        images/TAS008780Oview.jpg

Habitat of Centromadia pungens on Mt. Trashmore.

Photographed 5 August 2012.

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        images/IMG30553sm.jpg

Coll. No. 878, Centromadia pungens

Photographed 5 August 2012.

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        images/IMGQ1237sm.jpg

Coll. No. 878, Centromadia pungens

Photographed 5 August 2012.

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        images/IMGQ1239sm.jpg

Habitat of Centromadia pungens on Mt. Trashmore.

Photographed 5 August 2012.

The plants are in the center of the photo, just to the right of the water bottle.

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        images/IMG30555sm.jpg

Chaenactis carphoclinia carphoclinia

Coll. No. 348, Chaenactis carphoclinia var. carphoclinia

Scanned 27 October 2013.

Palea are exceeding flower buds.

Coll. No. 348, 20 April 2004, characters observed while keying: Annual, to 20 cm., tap-rooted; Leaves, basal and cauline, to 40 mm., finely pinnately 2° divided, margins not spiny; Inflorescence, no strap-shaped flowers, flowers of 1 kind; Phyllaries, in 2 overlapping series; Receptacle paleate, 9 mm., appearing ≥1 mm. above buds; Pappus of short, 0.6 mm., scales.

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        images/TAS003480Head.jpg

Coll. No. 348, Chaenactis carphoclinia var. carphoclinia

Scanned 27 October 2013.

Coll. No. 348, 20 April 2004, characters observed while keying: Annual, to 20 cm., tap-rooted; Leaves, basal and cauline, to 40 mm., finely pinnately 2° divided, margins not spiny; Inflorescence, no strap-shaped flowers, flowers of 1 kind; Phyllaries, in 2 overlapping series; Receptacle paleate, 9 mm., appearing ≥1 mm. above buds; Pappus of short, 0.6 mm., scales.

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        images/TAS003480Oview.jpg

Chaenactis douglasii douglasii

Coll. No. 2562, Chaenactis douglasii var. douglasii

Photographed 30 November 2021.

Plants of Colorado
Asteraceae

Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii.  Douglas' Dustymaiden.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2871 m. Open hillside with pines, also collected here: Cryptantha sp., Penstemon barbatus, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2562. 12-Jul-2021

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        images/IMGQ5505sm.jpg

Collection No. 620, Chaenactis douglasii

Scanned 27 Sep 2011. Scale in background has 1 mm divisions. Head on right has been partially dissected to aid identification. Collection locality is Adobe Hills Spillway, Mono County, California.

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        images/TAS006200Det.jpg

Collection No. 620, Chaenactis douglasii

Scanned 27 Sep 2011. Collection locality is Adobe Hills Spillway, Mono County, California.

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        images/TAS006200Oview.jpg

Coll. No. 829, Chaenactis douglasii var. douglasii.

Photographed 18 June 2012, on the alluvial bench above Tioga Lodge.

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        images/IMG30245sm.jpg

Coll. No. 829, Chaenactis douglasii var. douglasii

Photographed 26 January 2013.

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        images/IMG31013sm.jpg

Coll. No. 764.1, Chaenactis douglasii var. douglasii

Scanned 19 Jan 2012.

Coll. No. 764.1, 20 Jan 2012, characters observed while keying: Annual, maybe biennial, not thistle-like, not scapose, proximal hairs cobwebby; Leaves basal and cauline, deeply lobed, margins rolled (i.e., leaf blade not flat); Heads 20+; Receptacle not chaffy; Phyllaries in 2+ series, 7-9 mm x 2 mm wide; Flowers yellow, no ray flowers; Achenes pappus of scales, one series, not awl-shaped.

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        images/TAS007641Oview.jpg

Chaenactis fremontii

Coll. No. 330, Desert Pincushion (Chaenactis fremontii) near the Mesquite Mountains.

My collection #330. Photograph taken April 20, 2004.

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        images/IMGP0367sm.jpg

Coll. No. 330, Chaenactis fremontii

Scanned 24 October 2013.

Coll. No. 330, 20 Apr 2004, characters observed while keying: Annual, tap-rooted, to 35 cm.; Stem variously branched, proximal hairs 0, distally minutely glandular; Leaves, alternate, to 7 cm., deeply pinnately lobed below to entire above; Inflorescence, single heads on 5 cm. peduncles, flowers of two kinds in same heads, outer corollas not strap-shaped, head radiant; Phyllaries in 2+ series, ±equal length, outermost sometimes subtending a ray flower, without embedded oil gland, margin green, tip acute; Pappus of scales, few, one long (6 mm.) appearing among disc flowers remainder short, margins ragged; Corollas white; Fruit, 6 mm., dark brown.

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        images/TAS003300Head.jpg

Coll. No. 330, Chaenactis fremontii

Scanned 24 October 2013.

Coll. No. 330, 20 Apr 2004, characters observed while keying: Annual, tap-rooted, to 35 cm.; Stem variously branched, proximal hairs 0, distally minutely glandular; Leaves, alternate, to 7 cm., deeply pinnately lobed below to entire above; Inflorescence, single heads on 5 cm. peduncles, flowers of two kinds in same heads, outer corollas not strap-shaped, head radiant; Phyllaries in 2+ series, ±equal length, outermost sometimes subtending a ray flower, without embedded oil gland, margin green, tip acute; Pappus of scales, few, one long (6 mm.) appearing among disc flowers remainder short, margins ragged; Corollas white; Fruit, 6 mm., dark brown.

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        images/TAS00330Oview.jpg

Chaenactis glabriuscula

Coll. No. 122, Chaenactis glabriuscula

Scanned 7 November 2013.

Coll. No. 122, 29 April 1997, characters observed while keying: Annual, tap-rooted, to 15 cm.; Stems, leaves, and phyllaries all wooly; Leaves, alternate, not decurrent, 1°(2°) pinnate lobed; Inflorescence, none of the flowers with strap-shaped corollas, flowers of 1 kind, heads discoid, peduncled, cylindric to obconic; Phyllaries, in 2 series, ±equal (outer ≤ inner), ≤7 mm., green, margins not scarious; Receptacle, epaleate; Pappus, of well-developed flat scales, #4, ≤3 mm.; Corollas, yellow, open during day.

This keyed out fairly easily to Chaenactis glabriuscula var. glabriuscula by way of TJM2 Asteraceae Group 7. However, the location of this collection is way out of range for that taxon. There is one other collection of this taxon from the eastern Mojave (H. S. Reed, s.n., May 5, 1935, Wheaton Springs, UC914160) for which the determination or location has been questioned. If the corolla color is described as “... rarely pale yellow ...” then the Chaenactis key takes one to a determination of “Chaenactis hybrid.” However, the yellow color of the corolla looks strong to me, which pretty much forces one into Chaenactis glabriuscula.

Article records that use this photograph:

        images/TAS001220Oview.jpg

Coll. No. 122, Chaenactis glabriuscula

Scanned 7 November 2013.

Left to right:

  1. Two outer phyllaries.
  2. Two inner phyllaries.
  3. One outer flower.
  4. Four inner flowers.

Coll. No. 122, 29 April 1997, characters observed while keying: Annual, tap-rooted, to 15 cm.; Stems, leaves, and phyllaries all wooly; Leaves, alternate, not decurrent, 1°(2°) pinnate lobed; Inflorescence, none of the flowers with strap-shaped corollas, flowers of 1 kind, heads discoid, peduncled, cylindric to obconic; Phyllaries, in 2 series, ±equal (outer ≤ inner), ≤7 mm., green, margins not scarious; Receptacle, epaleate; Pappus, of well-developed flat scales, #4, ≤3 mm.; Corollas, yellow, open during day.

This keyed out fairly easily to Chaenactis glabriuscula var. glabriuscula by way of TJM2 Asteraceae Group 7. However, the location of this collection is way out of range for that taxon. There is one other collection of this taxon from the eastern Mojave (H. S. Reed, s.n., May 5, 1935, Wheaton Springs, UC914160) for which the determination or location has been questioned. If the corolla color is described as “… rarely pale yellow …” then the Chaenactis key takes one to a determination of “Chaenactis hybrid.” However, the yellow color of the corolla looks strong to me, which pretty much forces one into Chaenactis glabriuscula.

Article records that use this photograph:

        images/TAS001220FlPts.jpg

Chrysothamnus depressus

Collection No. 221, Chrysothamnus depressus longflower rabbitbrush

Grid is 10x10 to the inch.

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        images/TAS002210infl.jpg

Collection No. 221, Chrysothamnus depressus Longflower rabbitbrush

Grid is 10x10 to the inch.

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        images/TAS002210oview.jpg

Coll. No. 265, Chrysothamnus depressus

Scanned 29 October 2013.

Coll. No. 265, 1 Sep 2000, characters observed while keying: Woody perennial shrub, to 30 cm.; Stem, young, puberulent (not tomentose); Leaves, alternate, lanceolate, entire, without embedded oil glands, with short stalked glands; Inflorescence, none of the flowers with strap-shaped corollas, flowers of 1 kind; Involucre, obconic, 10 mm.; Phyllaries, graduated in 5 series, arranged in vertical ranks, without embedded oil glands; Corolla, yellow; Pappus of well-developed bristles, #many, Style appendages ±=stigmatic portion; Fruit with few glandular hairs.

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        images/TAS002650Oview.jpg

Chrysothamnus viscidiflorus puberulus

Coll. No. 887, Chrysothamnus viscidiflorus ssp. puberulus

Scanned August 11, 2013.

Coll. No. 887, 22 Aug 2012, characters observed while keying: Perennial shrub, to 1 m., juice with latex, not thistle-like; Stem generally glabrous (very few hairs), young stem few hairs (but not tomentose); Leaves alternate, linear, 30 mm. x 0.8-1.2 mm. wide, margins entire, not ciliate, adaxial surface with tangled hairs, oil glands 0; Heads, conical, not overtopped by distal leaves, ray flowers 0, disc flowers present; Involucre obconic, 8-9 mm.; Phyllaries in 3 distinct vertical ranks, graduated in size, lower << rest of involucre, opaque, tips acute, oil glands 0; Flowers 6; Pappus of many bristles, ±cylindric; Corollas yellow; Style, appendages (2.0 mm.) > stigmatic portion (1.6 mm.); Fruit moderately hairy.

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        images/TAS008870Infl.jpg

Coll. No. 887, Chrysothamnus viscidiflorus ssp. puberulus, illustrating “style appendages.”

Scanned 15 August 2013.

Coll. No. 887, 22 Aug 2012, characters observed while keying: Perennial shrub, to 1 m., juice with latex, not thistle-like; Stem generally glabrous (very few hairs), young stem few hairs (but not tomentose); Leaves alternate, linear, 30 mm. x 0.8-1.2 mm. wide, margins entire, not ciliate, adaxial surface with tangled hairs, oil glands 0; Heads, conical, not overtopped by distal leaves, ray flowers 0, disc flowers present; Involucre obconic, 8-9 mm.; Phyllaries in 3 distinct vertical ranks, graduated in size, lower << rest of involucre, opaque, tips acute, oil glands 0; Flowers 6; Pappus of many bristles, ±cylindric; Corollas yellow; Style, appendages (2.0 mm.) > stigmatic portion (1.6 mm.); Fruit moderately hairy.

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Chrysothamnus viscidiflorus viscidifl

Collection No. 705, Chrysothamnus viscidiflorus var. viscidiflorus near Sagehen Meadow.

Photograph taken 17 August 2010.

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        images/IMGP0803sm.jpg

Coll. No. 705, Chrysothamnus viscidiflorus ssp. viscidiflorus

Scanned 15 Nov 2011.

Coll. No. 705, 15 Nov 2011, characters observed while keyin: Perennial shrub; Stems woody at base, juice latex (?); Leaves entire, lanceolate, twisted > 360°, margin sparsely ciliate; Phyllaries 3 unequal series, tending to be aligned in vertical ranks, not transparent or scarious; Flowers all disc flowers, yellow; Achenes hairy, pappus of hairs/bristles "capillary bristles" (not ornamented).

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        images/TAS007050Oview.jpg

Chrysothamnus viscidiflorus viscidiflorus

Coll. No. 150, Chrysothamnus viscidiflorus ssp. viscidiflorus

Scanned 17 Jan 2014.

Coll. No. 150, 3 Oct 1997, characters observed: Perennial shrub, to 1 m.; Stem glabrous (few stray hairs); Leaves, alternate, linear, to 24 mm. × 1.5 mm. wide, ±straight, glandless, glabrous; Inflorescence, heads exceeding distal leaves, flowers of 1 kind, no strap-shaped corollas; Involucre, 9 mm.; Phyllaries, graduated in several series, not in vertical ranks, unequal, narrowly ovate, without embedded oil glands; Receptacle, epaleate; Flowers 5; Corolla, yellow, tube 3.5 mm. + throat 0.5 mm. + fused lobes 3.0 mm. + free lobes 0.5 mm. = 7.5 mm., gradually expanded above the tube; Pappus, well-developed, bristles, #many; Pistil, 6.0 mm. + stigmatic portion 1.2 mm. + appendages 1.0 mm. = 8.2 mm.; Fruit, moderately hairy.

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Cichorium intybus

Habitat of Coll. No. 1223, Cichorium intybus

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Cirsium arvense

Coll. No. 3210, Cirsium arvense.

Photographed 1 February 2024.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Cirsium arvense (L.) Scop.  Canada Thistle.

Guy Gulch, Jefferson County, Colorado. Broken shade up a small gulch 30 m. northeast of the Centennial Ranch house, 12.2 km. (geodesic) northwest of the GNIS location of Golden. 39.79491°N, 105.35385°W. WGS Elev. 2357 m. EDDMapS Record ID __________

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3210. 8-Sep-2023

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        images/IMGQ6099sm.jpg

Coll. No. 2773, Cirsium arvense

Scanned 4 June 2022.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Cirsium arvense (L.) Scop.  Canada Thistle.

Delong Park, Jefferson County, Colorado. New city park (construction in 2021 and 2022) near the intersection of 23rd Street and Vernon Drive, 1.75 km. southeast of the GNIS location of Golden. Basal leaves, shallowly dentate, spinulose; petiole narrowly winged, bases tapered. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2022, issued: Mar 17, 2022, to: Tom Schweich.

Tom Schweich, with Carol Cameron & David Chavez 2773. 6-May-2022

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Coll. No. 1200, Cirsium arvense

Photographed 12 July 2015.

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Coll. No. 1512, Cirsium arvense

Scanned 10 January 2017.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Northern part of open space, 1.6 mi. west on CO Highway 72 from CO Highway 93, north 1.9 mi. on Plainview Road, then 80 m. northwest; 16.3 km. north northwest of the GNIS location of Golden. 39.8977°N, 105.2687°W. WGS 1984 Elev. 1935 m. Mixed grasses and forbs, just below the ponderosa pine zone. Lightly grazed in 2016.

Coll. No. 1512, 24 July 2016, characters observed: Annual, to 70 cm., tap-rooted; Leaves, cauline, alternate, sessile but not obviously decurrent, 85 mm. × 20 mm. wide, margin sinuate, spiny, adaxial thinly tomentose, abaxial tomentose; Inflorescence, panicle(?); Heads, many, 30±, 15 mm. × 8 mm. dia., disk flowers only, dioecious, staminate heads, pappus < corolla, pistillate heads, pappus > corolla; Phyllaries, many (6-7) series, outer 3 mm. × 1.5 mm. wide, inner 15 mm. × 1 mm. wide, dark dorsal ridge, tips, spinulose, reflexed; Receptacle, soft bristles, 10 mm.; Pappus, plumose bristles.

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        images/TAS015120Infl.jpg

Cirsium neomexicanum

Coll. No. 354, Cirsium neomexicanum

Scanned 27 October 2013.

Coll. No. 354, 20 April 2004, characters observed while keying: Annual or biennial, to 60 cm., Stem, tomentose, ribbed; Leaves, alternate, 40 mm., sessile, not clasping, lanceolate, spiny lobed (not compound), both surfaces wooly; Inflorescence, solitary heads, no flowers with strap-shaped corollas, flowers of 1 kind; Involucre to 25 mm. × 60 mm. wide; Phyllaries, in many series, abaxial face without, or with very small, resinous ridge, outer margins variously minutely decorated (with hairs, spines, and cilia), inner entire, tip spines 8 mm.; Receptacle, simple bristles, 4 mm.; Corolla, tube 13 mm. + throat 7 mm. + lobes 9 mm.

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        images/TAS003540Oview.jpg

Cirsium scariosum congdonii

Cirsium scariosum, the Meadow Thistle, in Bridgeport Canyon.

Photographed 21 June 2012.

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Meadow thistle (Cirsium scariosum) growing vertically in the bank of Walker Creek

Photographed 24 July 2013.

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Coll. No. 855, Cirsium scariosum var. congdonii

Scanned 2 July 2013.

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Cirsium scopulorum

The unmistakeable Cirsium scopulorum along the old road.

Photographed 28 June 2018.

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Cirsium undulatum

Coll. No. 2377, Cirsium undulatum in progress.

Phototographed 23 June 2020.

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Coll. No. 2377, Cirsium undulatum with bumblebee.

Phototographed 23 June 2020.

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Distribution of collections of Cirsium undulatum

Mapped 26 June 2020. The source of data is SEINet and CCH2. SEINet data is shown in blue; CCH2 data is shown in green. The basemap is from ESRI ArcGIS Online.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Notes on Cirsium undulatum.

        images/280Cirund_collections.jpg

Big bumblebee on Cirsium undulatum

Phototographed 23 June 2020.

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Coll. No. 1460, Cirsium undulatum

Photographed 19 December 2016.

Coll. No. 1460, 27 June 2016, characters observed: Perennial thistle, to 30 cm., stout tap root; Stem, leafy, 20 cm.; Leaves, basal and cauline, basal, petiole 25 mm. + blade 180 mm. × 55 mm. wide, oblanceolate, pinnately lobed more than half-way to mid-rib, cauline, reduced above, decurrent 5 mm., 45 mm. × 14 mm. wide, lanceolate, surface, adaxial, thinly tomentose, abaxial, tomentose, margins, spiny; Head, 35 mm. × 40 mm. wide, indented around top of peduncle; Phyllaries, many (7?) series, 13 mm. × 3.5 mm. wide, + robust spine 5-6 mm., body dark dorsal ridge, outer and middle reflexed; Flowers, 1 kind; Disk flowers, 25-36 mm., corolla pink-purple; Pappus, plumose bristles; Cypsela, 5 mm., apical collar unremarkable.

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        images/IMGQ3470sm.jpg

Cirsium vulgare

Coll. No. 3237, Cirsium vulgare.

Photographed 24 April 2024.

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        images/20240424_111514sm.jpg

Leaf tip of Cirsium vulgare, Coll. No. 1035

Scanned 29 Dec 2014.

The things to see in this image are appressed prickles on the adaxial surface of the leaf.

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Conyza canadensis

Ratzloff collection of Conyza canadensis in Golden.

©reserved Denver Botanic Gardens URL: http://swbiodiversity.org/seinet/collections/individual/index.php?occid=13288130&clid=0 Accessed 5 May 2020. Usage Rights: CC0 1.0 (Public-domain).

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Conyza canadensis.

        images/280Concan_Ratzloff.jpg

Crepis capillaris

Fruit of Coll. No. 2243, Crepis capillaris

Scanned 15 Sep 2021.

Plants of Colorado
Asteraceae

Crepis capillaris (L.) Wallr.  Smooth Hawk's-Beard.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. 39.3363°N, 105.2671°W. WGS 1984 Elev. 2439 m. Ligulate, yellow, only one seen. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2243. 16-Sep-2019

Coll. No. 2243, 16 September 2019, characters observed: Annual(?) herb, 30 cm.; Stem, young, villous; Leaves, cauline, alternate, auriculate, petiole, 10-12 mm., blade 35 mm. × 5 mm. wide, reduced distally, oblanceolate, tomentose near base, adaxially glandular hairy, margin dentate, tip acute; Inflorescence, heads #4-5 per stem, showy, not overtopped by leaves; Peduncles, 35 mm.; Involucre, 7 mm. × 5 mm. wide; ovoid; Phyllaries, equal, 2 series, 7 mm. × 0.7 mm. wide, green, glandular-stipitate, margins, ±flat; Flowers of 1 kind; Ray flowers (ligules), many, tube 2.5 mm. + blade 6 mm. × 0.6 mm. wide, yellow; Pappus, simple capillary bristles, falling as a unit, 4.5 mm., ±equal, smooth.

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        images/TAS022430Fr.jpg

Coll. No. 2243, Crepis capillaris.

Photographed 20 June 2023.

Plants of Colorado
Asteraceae

Crepis capillaris (L.) Wallr.  Smooth Hawk's-Beard.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. 39.3363°N, 105.2671°W. WGS 1984 Elev. 2439 m. Ligulate, yellow, only one seen. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2243. 16-Sep-2019

Coll. No. 2243, 16 September 2019, characters observed: Annual(?) herb, 30 cm.; Stem, young, villous; Leaves, cauline, alternate, auriculate, petiole, 10-12 mm., blade 35 mm. × 5 mm. wide, reduced distally, oblanceolate, tomentose near base, adaxially glandular hairy, margin dentate, tip acute; Inflorescence, heads #4-5 per stem, showy, not overtopped by leaves; Peduncles, 35 mm.; Involucre, 7 mm. × 5 mm. wide; ovoid; Phyllaries, equal, 2 series, 7 mm. × 0.7 mm. wide, green, glandular-stipitate, margins, ±flat; Flowers of 1 kind; Ray flowers (ligules), many, tube 2.5 mm. + blade 6 mm. × 0.6 mm. wide, yellow; Pappus, simple capillary bristles, falling as a unit, 4.5 mm., ±equal, smooth.

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        images/IMGQ5902sm.jpg

Crepis intermedia

Coll. No. 687, Crepis intermedia

Photographed 7 Nov 2011.

Coll. No. 687, 7 Nov 2011, characters observed while keying: Perennial 6 dm tall; Leaves alternate, pinnately lobed; Infloresence a panicle with 7-19 heads; Involucre 10 mm long; Phyllaries in 2 series, 4 outer << inner, 4 inner black tipped; Receptacle naked; Flowers unable to discern color or ray vs. disk; Achenes 6, pappus of bristles.

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        images/TAS006870Oview.jpg

Crepis occidentalis

Crepis occidentalis (?) on Schweich Hill.

Photographed 12 April 2023.

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Coll. No. 1894, Crepis occidentalis

Scanned 22 November 2018.

Coll. No. 1894, 28 May 2018, characters observed: Perennial, herb, to 25 cm., taprooted; Stem, green, tomentose, glandular, no bristles; Leaves, basal and cauline, alternate, petiole 20 mm. + blade 56 mm. × 17 mm. wide, reduced distally, pinnately lobed nearly to mid-rib, segments deltoid, tomentose, glandular; Inflorescence, heads #3 per stem, showy, >leaves; Peduncles, 23 mm.; Involucre, 12 mm. × 12 mm. wide, cyindric, tomentose; Phyllaries, 2 graduated series, 3.5 mm. &tmes; 2 mm. wide, deltoid, 12.5 mm. × 3 mm. wide, lanceolate, ±flat, tomentose, gland-tipped black bristles evenly distributed; Receptacle, epaleate; Ray flowers (ligules), many, tube 6 mm. + blade 12.5 mm. × 2.4 mm. wide, yellow; Pappus, 9 mm. well-developed, bristles, ±equal, smooth; Fruit, 2 mm. × 1.3 mm. wide, brown, glabrous.

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        images/IMGQ4773sm.jpg

Crepis occidentalis “Western Hawks-beard” on Eagle Ridge.

Photographed 9 May 2023.

        images/20230509_111032sm.jpg

Two immature leaves of Crepis occidentalis(?)

Scanned 16 May 2021.

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Rosette of immature Crepis occidentalis(?)

Photographed 16 May 2021.

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Area where the Crepis occidentalis (?) was found.

Photographed 16 May 2021.

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Area where the Crepis occidentalis (?) was found.

Photographed 16 May 2021.

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        images/20210516_100908sm.jpg

Flower head of Coll. No. 1894, Crepis occidentalis

Scanned 22 November 2018.

Coll. No. 1894, 28 May 2018, characters observed: Perennial, herb, to 25 cm., taprooted; Stem, green, tomentose, glandular, no bristles; Leaves, basal and cauline, alternate, petiole 20 mm. + blade 56 mm. × 17 mm. wide, reduced distally, pinnately lobed nearly to mid-rib, segments deltoid, tomentose, glandular; Inflorescence, heads #3 per stem, showy, >leaves; Peduncles, 23 mm.; Involucre, 12 mm. × 12 mm. wide, cyindric, tomentose; Phyllaries, 2 graduated series, 3.5 mm. &tmes; 2 mm. wide, deltoid, 12.5 mm. × 3 mm. wide, lanceolate, ±flat, tomentose, gland-tipped black bristles evenly distributed; Receptacle, epaleate; Ray flowers (ligules), many, tube 6 mm. + blade 12.5 mm. × 2.4 mm. wide, yellow; Pappus, 9 mm. well-developed, bristles, ±equal, smooth; Fruit, 2 mm. × 1.3 mm. wide, brown, glabrous.

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Habitat of Coll. No. 2793, Crepis occidentalis (golf balls for scale).

Photographed 10 June 2022.

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Cyclachaena xanthifolia

Footnotes from Index Seminum in which Cyclachaena is proposed

Downloaded from Biodiversity Heritage Library 14 August 2020.

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        images/Fresenius1836Footnotessm.jpg

Page 1 from Index Seminum Frankfort/Am Main

Downloaded from Biodiversity Heritage Library 14 August 2020.

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Coll. No. 2423, Cyclachaena xanthiifolia

Photographed 17 August 2020.

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Dieteria bigelovii

Coll. No. 2663, Dieteria bigelovii.

Photographed 30 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman.  Bigelow's Tansy Aster.

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, crossed west to east by Bull Gulch, 222 m. west from the eastern boundary, north bank of the gulch, 1.36 km. north northwest of the main gate, and 23.0 km. north northwest of the GNIS location of Golden. 39.9083°N, 105.2785°W. WGS 1984 Elev. 1996 m. Peduncles and phyllaries with dense glandular hairs. Several rattlesnakes here. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. Variety bigelovii if infraspecific names are to be applied.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2663. 7-Aug-2021

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Habitat of Coll. No. 1299, Dieteria bigelovii

Photographed 23 September 2015.

Coll. No. 1299, 23 Sep 2015, characters observed: Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy.

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Flower head of Coll. No. 1299, Dieteria bigelovii

Photographed 22 January 2016.

Coll. No. 1299, 23 Sep 2015, characters observed: Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy.

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        images/TAS012990Head.jpg

Coll. No. 1299, Dieteria bigelovii

Photographed 22 January 2016.

Coll. No. 1299, 23 Sep 2015, characters observed: Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy.

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        images/IMGQ1911sm.jpg

Dittrichia graveolens

Coll. No. 909, Dittrichia graveolens

Photographed 4 October 2012.

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Coll. No. 909, Dittrichia graveolens

Photographed 4 October 2012.

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Stinkwort (Dittrichia graveolens) in the Jean Sweeney Open Space Preserve.

Photographed 13 July 2013.

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Dyssodia papposa

Coll. No. 1540, Dyssodia papposa

Scanned 20 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, on North Table Loop trail, at the fenceline of the Williams parcel, 0.88 km. southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.7 km. north northeast of the GNIS location of Golden. 39.796°N, 105.2055°W. WGS 1984 Elev. 1840 m. On edge of private horse pasture.

Coll. No. 1540, 18 August 2016, characters observed: Annual, to 15 cm., tap-rooted, most surfaces with scattered 0.4 mm. elliptical brown oil glands; Leaves, cauline, 28 mm. × 12 mm. wide, reduced above, pinnafitid, ±sessile; Heads, borne singly on leafy stems; Phyllaries, 2+ graduated series, 3 mm. × 1 mm. wide, lanceolate, to 6 mm. × 2.7 mm. wide, elliptic, 5-9 brown oil glands; Receptacle, epaleate; Flowers, 1 kind; Disk flowers, 2.8 mm., yellow; Pappus, scales, dissected to appear to be bristles, 3 mm.; Cypsela, 4 mm., black. Native roadside weed.

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Inflorescence of Coll. No. 1540, Dyssodia papposa

Scanned 20 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, on North Table Loop trail, at the fenceline of the Williams parcel, 0.88 km. southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.7 km. north northeast of the GNIS location of Golden. 39.796°N, 105.2055°W. WGS 1984 Elev. 1840 m. On edge of private horse pasture.

Coll. No. 1540, 18 August 2016, characters observed: Annual, to 15 cm., tap-rooted, most surfaces with scattered 0.4 mm. elliptical brown oil glands; Leaves, cauline, 28 mm. × 12 mm. wide, reduced above, pinnafitid, ±sessile; Heads, borne singly on leafy stems; Phyllaries, 2+ graduated series, 3 mm. × 1 mm. wide, lanceolate, to 6 mm. × 2.7 mm. wide, elliptic, 5-9 brown oil glands; Receptacle, epaleate; Flowers, 1 kind; Disk flowers, 2.8 mm., yellow; Pappus, scales, dissected to appear to be bristles, 3 mm.; Cypsela, 4 mm., black. Native roadside weed.

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        images/TAS015400Infl.jpg

Eatonella nivea

Coll. No. 755, Eatonella nivea

Photograph taken 16 June 2011.

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        images/IMG_1918sm.jpg

Coll. No. 755, Eatonella nivea

Photograph taken 16 June 2011.

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  • Inyo Forest Road 1N23, Inyo National Forest, Mono County, California: near gravel pit.
  • Field Notes: 16 Jun 2011.
  • A Checklist Flora of the Mono Lake Basin, Mono County, California and Mineral County, Nevada.: Eatonella nivea.

        images/IMGQ1000sm.jpg

Locality of Eatonella nivea

Photograph taken 21 June 2011.

Cathy Rose, left, and Cheryl, right, show us the locality and habitat of Eatonella nivea on Deer Spring Road. There were 8 plants on the outside of the road berm in front of them, and we found one plant on the other side of the road.

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Coll. No. 801, remnants of Eatonella nivea

Photographed 11 Sep 2011.

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Habitat of Eatonella nivea protected by a small fence.

Photographed 23 June 2015.

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Encelia frutescens

Coll. No. 2.4, Encelia frutescens

Scanned 15 October 2013. Determination tentative.

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        images/TAS000024a.jpg

Encelia virginensis

Coll. No. 4.2, Encelia virginensis

Scanned 16 October 2013.

Coll. No. 4.2, 16 Apr 1993, characters observed while keying: Perennial herb or subshrub, to 30 cm.; Hairs short white spreading, not glandular; Leaves, ?basal and cauline, generally alternate (can superficially appear opposite), abaxially strigose; Inflorescence, heads solitary, flowers of 2 kinds; Phyllaries in 2 series, outer 8 mm. × 1.8 mm. wide, inner slightly smaller, sometimes partially fused to ray flowers, without embedded oil glands; Receptacle paleate, enclosing disc ovaries; Pappus a low crown of scales on ray flowers and well-developed scales on disc flowers; Ray, yellow, blade elliptical, broad, 12 mm. ×6.5 mm., sterile; Fruit, compressed, margin thin, should be ciliate but unable to see in this specimen.

Article records that use this photograph:

        images/TAS000042.jpg

Ericameria linearifolia

Coll. No. 207, Ericameria linearifolia

Scanned 19 Jan 2014.

Coll. No. 207, 2 April 2000, characters observed: Perennial, herb, to 30 cm.; Leaves, alternate, some in clusters, linear, 20 mm. × 1 mm. wide, glandular-sticky, regularly spaced resin pits; Inflorescence, some flowers with strap-shaped corollas, head composed of two kinds of flowers; Receptacle, epaleate; Phyllaries, in 5 not-fully-overlapping series, graduated in size, 6-11 mm. × 1.5-2.5 mm. wide, mid phyllary vein prominent throughout length though not raised, margin fringed; Rays, 7, yellow, 22-23 mm. × 5 mm. wide, 0-2 appendages to 14 mm.; Disk flowers, ±20; Pappus of well-developed bristles on both ray and disk flowers, ± cylindric; Pistil, style 8 mm. + stigma 1.5 mm. + appendages 1.0 mm.; Fruit, dense silky hairy. This collection is determined as Ericameria linearifolia, although it does not key there, primarily because the phyllaries are definitely not equal, whereas E. linearifolia requires phyllaries that are ±equal.

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        images/TAS002070Oview.jpg

Coll. No. 1581, Ericameria linearifolia

Scanned 31 October 2017.

Coll. No. 1581, 18 April 2017, characters observed: Low-growing perennial subshrub, to 15 cm., woody at base; Twigs, green-striate, glandular-punctate, becoming white-scaly with age; Leaves, alternate, subsessile, 20 mm. × 2 mm. wide, margins rolled, glandular punctate, few white hairs, becoming white-scaly in age; Inflorescence, heads borne singly; Involucre, 10 mm. × 15 mm wide; Phyllaries, 2+ series, graduated, 6-10 mm. × 1.5-1.8 mm wide, base thick, center green, mid-vein prominent, short-stalked glandular, margin variously chartaceous entire to irregularly small-toothed; Receptacle, epaleate; Pappus, 1 series of bristles, 6 mm.; Rays, fertile, #6-8, tube 5 mm. + blade 12 mm. × 3.6 mm. wide, yellow; Disc flowers, #18-20, yellow; Style, stigma 0.7 mm., appendage 1.0 mm.; Cypsela, 4 mm., hairy. The phyllaries of this collection vary from the Jepson (2012) key and description by virtue of being graduated in size and much variation in the phyllary margins. I don't see any reason to think this might be a hybrid with E. cooperi.

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Coll. No. 92, Ericameria linearifolia

Scanned 27 October 2013.

Coll. No. 92, 29 April 1997, characters observed while keying: Woody perennial, to 50 cm.; Stems erect; Leaves, alternate throughout, entire, glabrous, dotten with glands in sunken pits, resinous; Inflorescence, solitary heads on 35 mm. peduncles, some flowers with strap-shaped corollas, head radiate, composed of 2 kinds of flowers; Phyllaries, in 2+ overlapping series, ±equal in length, 6 mm. × 2.7 mm. wide, margins transparent, outer without oil glands, tips acuminate; Receptacle epaleate; Pappus of many well-developed bristles on ray and disc flowers, ±cylindric; Corolla, ray and disc, yellow.

Article records that use this photograph:

        images/TAS000920Oview.jpg

Coll. No. 207, Ericameria linearifolia

Scanned 19 Jan 2014.

Coll. No. 207, 2 April 2000, characters observed: Perennial, herb, to 30 cm.; Leaves, alternate, some in clusters, linear, 20 mm. × 1 mm. wide, glandular-sticky, regularly spaced resin pits; Inflorescence, some flowers with strap-shaped corollas, head composed of two kinds of flowers; Receptacle, epaleate; Phyllaries, in 5 not-fully-overlapping series, graduated in size, 6-11 mm. × 1.5-2.5 mm. wide, mid phyllary vein prominent throughout length though not raised, margin fringed; Rays, 7, yellow, 22-23 mm. × 5 mm. wide, 0-2 appendages to 14 mm.; Disk flowers, ±20; Pappus of well-developed bristles on both ray and disk flowers, ± cylindric; Pistil, style 8 mm. + stigma 1.5 mm. + appendages 1.0 mm.; Fruit, dense silky hairy. This collection is determined as Ericameria linearifolia, although it does not key there, primarily because the phyllaries are definitely not equal, whereas E. linearifolia requires phyllaries that are ±equal.

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Ericameria nauseosa

Fig. 3662 from Britton and Brown (1898), Chrysothamnus nauseosus

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        images/BrittonNLB1898_3662.jpg

Light-colored variant of Ericameria nauseosa

Photographed 23 May 2018.

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Ericameria nauseosa graveolens

Coll. No. 2229, Ericameria nauseosa var. graveolens

Photographed 12 September 2019.

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Coll. No. 1063, Ericameria nauseosa ssp. graveolens

Photographed 17 September 2014.

This collection was made on Illinois Street, between 4th and 5th Streets.

Collection No. 1063, 17 September 2014, characters observed: Perennial shrub, woody at base, to 1 m., sprawling to erect; Stem covered with felt-like tomentum (long hairs infiltrated with resin, must scrape with knife to expose); Leaves, alternate, lance-linear, 70 mm. × 3 mm., not twisted in the manner of some related species, upper surface tomentose, margin entire; Heads discoid (with only disk flowers), cymose at ends of branches, narrowly tubular; Involucre 8 mm., not spiny; Phyllaries in 3 vertical ranks, outer << inner, keeled, some with few short hairs; Receptacles not chaffy, but have some short (<0.5 mm.) appendages between flowers; Flowers #5; Corolla tube (i.e., petals united at base) 7.5 mm. + lobes #5, 1 mm., glabrous throughout; Ovary inferior; Pappus of bristles, 6-7 mm., white; Stamens 5; Anthers connate (united), 2 mm., acute at base; Style 11 mm., branches half-round in cross-section, stigmatic 1 mm. + appendage 2 mm., glabrous inside, uniformly short hairy on outside, tips rounded; cypselae, all similar in shape, 5 mm., short hairy;

Not known from California. In Ackerfield (2012), Asteraceae, Key 2, 15a-b, a question of how tomentose the stems and leaves are made keying tricky.

Location records that use this photograph:

  • Golden, Jefferson County, Colorado

Article records that use this photograph:

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Holotype of Chrysocoma graveolens Nutt.

Retrieved 23 February 2016.

URL: https://plants.jstor.org/stable/10.5555/al.ap.specimen.ph00033829

This is the holotype of Chrysocoma graveolens Nutt., which through a series of renamings became Ericameria nauseosa (Pall. Ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler.

Article records that use this photograph:

        images/Nuttall_Holotype_Chrysocoma_graveolens.jpg

Locations in central South Dakota

Collections of Chrysocoma graveolens Nuttall (Syn: Chrysocoma dracunculoides Pursh [illeg.]) = Ericameria nauseosa (Pallas ex Pursh) G. L. Nesom & G. I. Baird var. graveolens (Nutt.) Reveal & Schuyler, were made at Big Bend of the Missouri and the Cheyenne River.

We don't really know where the collection of Chrysocoma nauseosa Pursh = Ericameria nauseosa (Pallas ex Pursh) G. L. Nesom & G. I. Baird var. nauseosa, was made, but it was likely along this stretch of the Missouri River.

Article records that use this photograph:

  • How did rubber rabbitbrush get that long scientific name?: Lewis&Clark.

        images/SouthDakota_Oct1804.jpg

Coll. No. 1064, Ericameria nauseosa ssp. graveolens

Photographed 17 September 2014.

This collection was made just below the Mitchell Elementary School yard, at the intersection of Illinois Street and 4th Street.

Collection No. 1063, 17 September 2014, characters observed: Perennial shrub, woody at base, to 1 m., sprawling to erect; Stem covered with felt-like tomentum (long hairs infiltrated with resin, must scrape with knife to expose); Leaves, alternate, lance-linear, 70 mm. × 3 mm., not twisted in the manner of some related species, upper surface tomentose, margin entire; Heads discoid (with only disk flowers), cymose at ends of branches, narrowly tubular; Involucre 8 mm., not spiny; Phyllaries in 3 vertical ranks, outer << inner, keeled, some with few short hairs; Receptacles not chaffy, but have some short (<0.5 mm.) appendages between flowers; Flowers #5; Corolla tube (i.e., petals united at base) 7.5 mm. + lobes #5, 1 mm., glabrous throughout; Ovary inferior; Pappus of bristles, 6-7 mm., white; Stamens 5; Anthers connate (united), 2 mm., acute at base; Style 11 mm., branches half-round in cross-section, stigmatic 1 mm. + appendage 2 mm., glabrous inside, uniformly short hairy on outside, tips rounded; cypselae, all similar in shape, 5 mm., short hairy;

Not known from California. In Ackerfield (2012), Asteraceae, Key 2, 15a-b, a question of how tomentose the stems and leaves are made keying tricky.

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        images/IMG40464sm.jpg

Ericameria nauseosa hololeuca

Collection No. 513, Ericameria nauseosa var. hololeuca

Scanned 17 March 2011. Background grid is 10 x 10 to the inch.

What I think I'm seeing here is that the stems are tomentose, except where recently split, infloresence paniculate, and the phylarries are pubescent to tomentose.

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        images/TAS005130det.jpg

Collection No. 513, Ericameria nauseosa var. hololeuca

Scanned 17 March 2011. Background grid is 10 x 10 to the inch.

What I think I'm seeing here is that the stems are tomentose, except where recently split, infloresence paniculate, and the phylarries are pubescent to tomentose.

Article records that use this photograph:

        images/TAS005130oview.jpg

Coll. No. 885, Ericameria nauseosa var. hololeuca

Scanned 11 July 2013.

Coll. No. 885, 22 August 2012, characters observed while keying: Shrub, ±1 m,; Stem, tomentose through 2nd-3rd year; Leaves, 21 mm. x 2.5 mm. wide, sessile, erect, strap-shaped, entire; Involucre bell-shaped; Phyllaries, unequal, several series, but not in 5± ranks, margins thick(?), mid-ribs brown; Flowers of 1 kind, ray flowers; Receptacle epaleate; Corolla 7 mm., yellow, lobes 1 mm.; Pappus of many well-developed bristles; Style appendages (1.0 mm.) < stigma (2.2 mm.); Fruit (silky) hairy.

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Coll. No. 886, Ericameria nauseosa var. hololeuca

Scanned 16 July 2013.

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Coll. No. 886, Ericameria nauseosa var. hololeuca

Scanned 16 July 2013.

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Ericameria nauseosa nauseosa

Habitat of Coll. No. 2440, Ericameria nauseosa var. nauseosa

Photographed 28 August 2020.

Only plant in bloom. Many more not in bloom, including one just to left and above my field press.

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Ericameria nauseosa var. nauseosa on Eagle Ridge

Photographed 24 July 2020.

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Coll. No. 2440, Ericameria nauseosa var. nauseosa

Photographed 28 August 2020.

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        images/20200828_105513sm.jpg

Coll. No. 2440, Ericameria nauseosa var. nauseosa

Scanned 28 December 2020.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa.  Rubber Rabbitbush.

Eagle Ridge, Jefferson County, Colorado. North slope of “Eagle Ridge,” an informally named hogback between US Highway 6 and Deadman Gulch (Kinney Run), just below the Cercocarpus montanus, 3.26 km. south of the GNIS location of Golden. 39.7335°N, 105.2149°W. WGS 1984 Elev. 1806 m. Shrubs are 15-20 cm. in height, much shorter than our more common variety graveolens. This particular shrub is phenologically ahead of others nearby. See also Coll. No. 2421, same taxon and location, 11 days earlier.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2440. 28-Aug-2020

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        images/TAS024400Oviewsm.jpg

Ericameria nauseosa oreophila

BYB on Coll. No. 1025, Ericameria nauseosa var. oreophila

Photographed 24 July 2013.

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        images/IMG_1615sm.jpg

Coll. No. 1025, Ericameria nauseosa var. oreophila

Scanned 5 January 2015.

The three things to see here are:

  1. The fruit is hairy, which eliminates var. leiosperma.
  2. The style appendages < stigma, which eliminates var. speciosa and others.
  3. The corolla lobes are large (2 mm.) which eliminates var. hololeuca.

Coll. No. 1025, 24 Jul 2014, characters observed whilst keying: Perennial to 1 m., stem and leaves without round, ±evenly spaced resin-filled pits; Leaves, thread-like; Phyllaries in 4 series, 2-ranked, aligned vertically, tips erect; Rays 0; Disc flowers, corolla lobes 2 mm.; Style, stigma 2.0 mm., appendage 1.8 mm.; Fruit, 2.5 mm. hairy.

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        images/TAS010250Fl.jpg

Ericameria nauseosa var. nauseosa

Ericameria nauseosa var. nauseosa beside the Lubahn Trail.

Photographed 7 July 2023.

Article records that use this photograph:

  • Lubahn Trail (northern segment of loop), Golden, Jefferson County, Colorado: below plaque.
  • Field Notes: 7 Jul 2023.

        images/20230707_085738sm.jpg

Exposed roots of Ericameria nauseosa var. nauseosa beside the Lubahn Trail.

Photographed 7 July 2023.

Article records that use this photograph:

  • Lubahn Trail (northern segment of loop), Golden, Jefferson County, Colorado: below plaque.
  • Field Notes: 7 Jul 2023.

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Ericameria parryi aspera

Coll. No. 991, Ericameria parryi var. aspera

Photographed 28 February 2015.

Determination tentative.

Coll. No. 991, 20 June 1991, characters observed while keying: Perennial, woody, low growing; Stem, decumbent, white tomentose; Leaves, 10 mm. × 1 mm. wide, narrowly oblanceolate, tip acuminate, glandular hairy; Inflorescence, none (collected wrong time of year).

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Article records that use this photograph:

  • Inyo Forest Road 01S91 “Old Stationhouse Road,” Mono County, California: at wash.
  • Field Notes: Coll. No. 991.

        images/IMGQ0237sm.jpg

Ericameria parryi parryi

Coll. No. 2698, Ericameria parryi var. parryi.

Photographed 8 February 2022.

Plants of Colorado
Asteraceae

Ericameria parryi (A. Gray) G. I. Nesom & G. I. Baird var. parryi.  Parry's Rabbitbrush.

Salt Creek, Park County, Colorado. Just north of Salt Creek, between it and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden 38.9572°N, 106.0117°W. WGS 1984 Elev. 2849 m. Lvs. > infl, phyllaries attenuate, fls. #12. Open prairie just above the creek, not as dry as the slope above where most collections were made at this location.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2698. 16-Aug-2021

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        images/IMGQ5599sm.jpg

Erigeron

Coll. No. 2734, Erigeron sp.

Photographed 14 February 2022.

Plants of Colorado
Asteraceae

Erigeron.  Fleabane.

Brumley, Lake County, Colorado. Sandy abandoned oxbow of the North Fork of Lake Creek, about 130 m. north of the Sno-Tel station road turnoff from the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. 39.0902°N, 106.5419°W. WGS 1984 Elev. 3235 m. Tiny annual. Brumley was a stage stop on the route across Independence Pass.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2724. 18-Aug-2021

Article records that use this photograph:

        images/IMGQ5612sm.jpg

Erigeron aphanactis aphanactis

Coll. No. 769, Erigeron aphanactis var. aphanactis

Scanned 22 Jan 2012.

Coll. No. 769, 22 Jan 2012, characters observed while keying: Perennial herb to 10 cm; Stem branched in proximal 1/2; Leaves entire, cauline reduced; Inforesence 1-few-flowered; Phyllaries in 2 series, 5 mm x 1 mm wide, hairy, not enfolding marginal achenes, margins white (scarious), tips green to brown (not black); Flowers rays absent, disk flowers yellow; Achenes with a pappus of 12± bristles.

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        images/TAS007690Oview.jpg

Coll. No. 769, Erigeron aphanactis var. aphanactis

Scanned 22 Jan 2012.

Coll. No. 769, 22 Jan 2012, characters observed while keying: Perennial herb to 10 cm; Stem branched in proximal 1/2; Leaves entire, cauline reduced; Inforesence 1-few-flowered; Phyllaries in 2 series, 5 mm x 1 mm wide, hairy, not enfolding marginal achenes, margins white (scarious), tips green to brown (not black); Flowers rays absent, disk flowers yellow; Achenes with a pappus of 12± bristles.

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        images/TAS007690Det.jpg

Erigeron canadensis

Collection No. 518, Erigeron canadensis

Scanned 19 March 2011. Background grid is 10 x 10 to the inch.

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        images/TAS005180oview.jpg

Erigeron compositus

Coll. No. 1901, Erigeron compositus

Photographed 24 November 2018.

Coll. No. 1901, 31 May 2018, characters observed: Perennial herb, from woody caudex, 10 cm.; Leaves, basal, petiole, 18-22 mm., 5 mm. × 6 mm. wide, ternately divided, glandular, straight multicellular hairy; Inflorescence, 1 head per stem; Peduncles, 40 mm., glandular, short straight spreading hairs; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 2+ series, 6 mm. × 1.3 mm. wide, outer phyllaries glandular hairy, green mid-rib and distally, chartaceous then scarious toward margin, tip, acute, purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #25, tube 1.8 mm. + blade 5.3 mm. × 1 mm. wide, white, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.3 mm., expanding gradually, yellow, open; Pappus, well-developed, bristles, 3.5-3.8 mm., ±equal, capillary; Cypsela, 2.2 mm. × 0.6 mm. wide, angled, brown, hairy.

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        images/IMGQ4791sm.jpg

Coll. No. 1901, Erigeron compositus

Scanned 24 November 2018.

Coll. No. 1901, 31 May 2018, characters observed: Perennial herb, from woody caudex, 10 cm.; Leaves, basal, petiole, 18-22 mm., 5 mm. × 6 mm. wide, ternately divided, glandular, straight multicellular hairy; Inflorescence, 1 head per stem; Peduncles, 40 mm., glandular, short straight spreading hairs; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 2+ series, 6 mm. × 1.3 mm. wide, outer phyllaries glandular hairy, green mid-rib and distally, chartaceous then scarious toward margin, tip, acute, purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #25, tube 1.8 mm. + blade 5.3 mm. × 1 mm. wide, white, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.3 mm., expanding gradually, yellow, open; Pappus, well-developed, bristles, 3.5-3.8 mm., ±equal, capillary; Cypsela, 2.2 mm. × 0.6 mm. wide, angled, brown, hairy.

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        images/TAS019010Oview.jpg

Erigeron divergens

Pappi of Coll. No. 2092, Erigeron divergens

Microphotographed 22 October 2019.

Coll. No. 2092, 26 June 2019, characters observed: Perennial herb 20 cm.; Stem ascending, short spreading white hairs; Leaves, cauline, alternate, sessile, not clasping, blade 23 mm. × 4.5 mm. wide, 5× long/wide, reduced distally, oblanceolate, entire, eglandular, white curved hairs but not appressed (FNANM: strigoso-hirsute), margins, entire; Inflorescence, heads enclosed by involucre, heads #3+ per stem, not overtopped by leaves; Peduncles, 24-50 mm.; Involucre, 10-11 mm. wide × 5.5 mm. high, ellipsoid; Phyllaries, ±equal, 3± series, 4 mm. × 0.6 mm. wide, green, minutely glandular, margins flat, tips acute; Receptacle, epaleate; Flowers, 2 kinds, Ray flowers, many, tube 2 mm. + blade 5-6 mm. × 0.5 mm. wide, lavender, fertile, pappus, very short scales with a few barbellate bristles; Disk flowers, many, tube 2 mm. + lobes 0.4 mm., tube white, lobes yellow, pappus, alternating very short scales and barbellate bristles, 1.5 mm.; Fruit, 0.8 mm., slightly compressed front to back, light brown, sparsely hairy.

Article records that use this photograph:

        images/TAS020920pappi.jpg

Coll. No. 2092, Erigeron divergens

Photographed 26 June 2019.

Coll. No. 2092, 26 June 2019, characters observed: Perennial herb 20 cm.; Stem ascending, short spreading white hairs; Leaves, cauline, alternate, sessile, not clasping, blade 23 mm. × 4.5 mm. wide, 5× long/wide, reduced distally, oblanceolate, entire, eglandular, white curved hairs but not appressed (FNANM: strigoso-hirsute), margins, entire; Inflorescence, heads enclosed by involucre, heads #3+ per stem, not overtopped by leaves; Peduncles, 24-50 mm.; Involucre, 10-11 mm. wide × 5.5 mm. high, ellipsoid; Phyllaries, ±equal, 3± series, 4 mm. × 0.6 mm. wide, green, minutely glandular, margins flat, tips acute; Receptacle, epaleate; Flowers, 2 kinds, Ray flowers, many, tube 2 mm. + blade 5-6 mm. × 0.5 mm. wide, lavender, fertile, pappus, very short scales with a few barbellate bristles; Disk flowers, many, tube 2 mm. + lobes 0.4 mm., tube white, lobes yellow, pappus, alternating very short scales and barbellate bristles, 1.5 mm.; Fruit, 0.8 mm., slightly compressed front to back, light brown, sparsely hairy.

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        images/TAS020920Oview.jpg

Coll. No. 2835, Erigeron divergens.

Photographed 4 November 2022.

Plants of Lippincott Ranch
Boulder and Jefferson Counties, Colorado
Asteraceae

Erigeron divergens Torr. & A. Gray.  Spreading Fleabane.

Lippincott Ranch (North), Boulder County, Colorado. Left bank of the north fork of Spring Brook, 2.59 km. north northwest of the main gate, 2.31 km. south southwest of the GNIS location of Eldorado Springs. 39.9167°N, 105.2791°W. WGS 1984 Elev. 2019 m. Sunny spot among ponderosa pines above the creek, also collected or seen nearby: Humulus lupulus, Rumex acetosella, Castilleja rhexifolia, and Smilax lasioneuron. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Boulder OSMP, issued: May 27, 2022, to: Tom Schweich.

Tom Schweich, with John Vickery 2835. 2-Jul-2022

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        images/IMGQ5720sm.jpg

Coll. No. 1668, Erigeron divergens

Photographed 15 December 2017.

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        images/IMGQ4492sm.jpg

Coll. No. 1489, Erigeron divergens

Scanned 3 January 2017.

Coll. No. 1489. 13 July 2016, characters observed: Annual or short-lived perennial, to 15 cm., tap-rooted, ±spreading hairy throughout, becoming minutely glandular above, hairs multicellular with clear crosswalls; Leaves, basal, absent or withered; cauline, alternate, petiole ±10 mm. + blade ±12 mm. × 2.4 mm. wide, uniformly hairy, somewhat reduced above; Inflorescence, heads borne singly on leafy stems, peduncles spreading or decurved, but cannot be described as “heads nodding;” Involucre, 3 mm. × limb 12 mm.; Receptacle, epaleate; Flowers, 2 kinds; Rays, corolla, 3.5 mm., white fading blue; Disk flowers, corolla, 1.7 mm., yellow; Pappus, short scales and longer capillary bristles, similar on ray and disk flowers; Cypsela, 0.8 mm.

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        images/TAS014890Oview.jpg

Erigeron eatonii sonnei

Coll. No. 968, Erigeron eatonii var. sonnei

Scanned on 9 Feb 2014.

Coll. No. 968, 22 May 2013, characters observed: Perennial herb to 12 cm.; Stem, glandless; Leaves, opposite below, reduced and alternate above, entire, eglandular; Inflorescence, of two kinds of flowers; Heads, solitary; Receptacle epaleate; Phyllaries, in 2+ series, 5.5-6.5 mm., outer slightly smaller, herbaceous throughout, eglandular; Rays, 8 mm., blue/purple, fertile; Disk, flowers, 4 mm., yellow; Pappus, of well-developed bristles, #>20, 3.5 mm., few short bristles.

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        images/TAS009680Oview.jpg

Erigeron eximius

Coll. No. 2848, Erigeron eximius

Photographed 12 November 2022.

Plants of Colorado
Asteraceae

Erigeron eximius Greene.  Splendid Daisy, Sprucefir Fleabane.

Morrison Creek, Jefferson County, Colorado. Buffalo Creek Recreation Area, upper reaches of Morrison Creek, southwest of Little Scraggy Peak, 1.83 km. west northwest of the Kelsey Campground, and 5.79 km. southwest of the Little Scraggy Trailhead. 39.3089°N, 105.2825°W. WGS 1984 Elev. 2563 m. Streamside in shady forest, also collected nearby Aconitum columbianum, Hackelia floribunda, and Geranium caespitosum.

Collected by permit: Pike - San Isabel National Forest, 2022, issued: Mar 29, 2022, to: Tom Schweich.

Tom Schweich 2848. 12-Jul-2022

Article records that use this photograph:

        images/IMGQ5731sm.jpg

Erigeron flagellaris

Coll. No. 2537.1, Erigeron flagellaris

Photographed 19 November 2021.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Erigeron flagellaris A. Gray.  Trailing Fleabane.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the "panhandle" southern part of the ranch, near the powerline, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2731°W. WGS 1984 Elev. 1989 m. Stem hairs ascending to appressed. Open seasonally wet grassland, also nearby: Potentilla hippiana var. effusa, Amorpha nana, and Gentiana affinis. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2537.1 29-Jun-2021

Article records that use this photograph:

        images/IMGQ5479sm.jpg

Coll. No. 1116, Erigeron flagellaris

Scanned 15 September 2015.

Coll. No. 1116, 28 May 2015, characters observed: Perennial, to 5-6 cm., with scapose inflorescence to 9 cm., spreading by leafy stoloniferous branches; Leaves, basal and cauline, entire, basal, linear-oblanceolate, 35 mm. × 2.5 mm., cauline, linear, 13 mm. × 1.5 mm.; Inflorescence, single heads on scape to 8 cm.; Receptacle epaleate; Phyllaries, 2+series, ±equal, 4 mm., hairy abaxially, ascending multicellular hairs with clear crosswalls, glandular between hairs; Flowers of 2 kinds; Pappus of bristles, 2 mm., + short scales, that of ray and disc flowers alike; Rays, #±80, corolla white, fading lilac, 8 mm. × 0.5 mm.; Disc flowers, corolla yellow, lobes triangular; Achene, short hairy.

Article records that use this photograph:

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Coll. No. 1829, Erigeron flagellaris

Scanned 14 July 2018.

Article records that use this photograph:

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Coll. No. 1829, Erigeron flagellaris

Scanned 14 July 2018.

Article records that use this photograph:

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Erigeron glacialis

Coll. No. 2005, Erigeron glacialis

Photographed 26 January 2019.

Coll. No. 2005, 25 July 2018, characters observed: Perennial herb, 50 cm., caudex, taprooted; Stem, proximal stem glabrous to distal stem pilose; Leaves, alternate, largest, petiole 60 mm. to sessile distally, blade 120 mm. × 30 mm. wide, reduced distally, oblanceolate, to ovate distally, entire, glabrous to sparsely pilose distally, especially on veins, margins, ciliate; Inflorescence, #1-3 per stem, showy, flat-topped, >leaves; Peduncles, 40-70 mm.; Involucre, 11 mm. × 20 mm. wide, hemispheric; Phyllaries, 3± series, 8 mm. × 1 mm. wide, green with purple tips, glandular, margins, flat; Flowers, 2 kinds; Ray flowers, #30-40, tube 3 mm. + blade 11 mm. × 2.5 mm. wide, coiling, blue, fertile; Disk flowers, many, tube 3.5 mm. + lobes, 0.5 mm., expanding slightly, yellow, bisexual; Pappus, single series, many, well-developed, capillary bristles, 2.4-3.6 mm.; Anther, 1.5 mm., base rounded; Cypsela, 1.8 mm. × 0.3 mm. wide, compressed front to back, brown, hirsute, no beak.

Article records that use this photograph:

        images/IMGQ4859sm.jpg

Coll. No. 2584, Erigeron glacialis

Photographed 9 December 2021.

Plants of Colorado
Asteraceae

Erigeron glacialis (Nutt.) A. Nelson.  Glacial Daisy.

Lily Lake, Lake County, Colorado. North side of Lily Lake, at the edge of a wetland formed by North Fork West Tennessee Creek, near the end of the Pike-San Isabel Forest Road 131, 2.8 road miles west of US Highway 24, 140 km. southwest of the GNIS location of Golden. 39.3519°N, 106.3674°W. WGS 1984 Elev. 3236 m. Also collected here: Potentilla gracilis var. fastigiata, Arctostaphylos uva-ursi, Penstemon procerus, Erigeron glacialis. and Taraxacum officinale.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2584. 13-Jul-2021

Article records that use this photograph:

        images/IMGQ5520sm.jpg

Erigeron lonchophyllus

Coll. No. 709, Erigeron lonchophyllus

Scanned 16 Nov 2011.

Coll. No. 709, 16 Nov 2011, Characters observed while keying: Perennial herb to 2 dm; Leaves basal and cauline, basal narrowly elliptic, petiole 2 cm, blade 5 cm, 7mm wide, cauline alternate linear; Phyllaries in 3 series, outer 1/2 x inner 2 series, scarious only on edges, purple tips; Flowers white, rays absent inconspicuous, pistillate and staminate flowers in same head, outer flowers without corollas; Achenes with a pappus of bristles.

Article records that use this photograph:

  • Inyo National Forest Road 01S04A, Mono County, California: 10300.
  • Field Notes: Col. #709.

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Erigeron speciosus

Coll. No. 2612, Erigeron speciosus

Photographed 14 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Erigeron speciosus (Lindl.) DC.  Aspen Fleabane.

Lippincott Ranch (North), Boulder County, Colorado. Northern part of ranch, north-facing slope overlooking Spring Brook. 2.2 km. north of the main gate, 23.8 km. north northwest of the GNIS location of Golden. 39.9139°N, 105.2785°W. WGS 1984 Elev. 2045 m. Deep grasses in openings of ponderosa pine woodland. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2612. 20-Jul-2021

Coll. No. 2612, 29 July 2021, characters observed: Perennial herb, to 75 cm., rhizomatous; Stem, glabrous, purple at base; Leaves, basal, absent, lower cauline, petiole 25 mm. + blade 45 mm. × 6 mm. wide, upper cauline, sessile, 42 mm. × 7.5 mm. wide, lanceolate, gradually reduced, margins, entire, ciliate; Involucre, 5 mm. × 13 mm. wide, base glandular; Phyllaries, 3± series, 4-5 mm. × 0.5 mm. wide, outer ±= inner, outer green, inner yellow-tan, curved distally, finely glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2 mm. + blade 10 mm. × 0.5 mm. wide, lavender; Disk flowers, many, tube 3.3 mm. + lobes 0.5 mm., yellow; Pappus, two series, short and long, long, 2 mm.; Cypsela, 1.3 mm. hairy.

Article records that use this photograph:

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Cauline leaf of Coll. No. 2645, Erigeron speciosus.

Photographed 25 January 2022.

Plants of Colorado
Asteraceae

Erigeron speciosus (Lindl.) DC.  Aspen Fleabane.

Morrison Creek, Jefferson County, Colorado. Buffalo Creek Recreation Area, along Morrison Creek and former National Forest Road 547, 2.30 km. south of National Forest Road 550, 62.9 km. south of the GNIS location of Golden. 39.3225°N, 105.2837°W. WGS 1984 Elev. 2423 m. Ray flowers white fading lavender, basal leaves withered on some plants. Banks of Morrison Creek, at north end of a opening in the forest or “meadow” with many down trees.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2645. 5-Aug-2021

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Article records that use this photograph:

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Coll. No. 2645, Erigeron speciosus.

Photographed 25 January 2022.

Plants of Colorado
Asteraceae

Erigeron speciosus (Lindl.) DC.  Aspen Fleabane.

Morrison Creek, Jefferson County, Colorado. Buffalo Creek Recreation Area, along Morrison Creek and former National Forest Road 547, 2.30 km. south of National Forest Road 550, 62.9 km. south of the GNIS location of Golden. 39.3225°N, 105.2837°W. WGS 1984 Elev. 2423 m. Ray flowers white fading lavender, basal leaves withered on some plants. Banks of Morrison Creek, at north end of a opening in the forest or “meadow” with many down trees.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2645. 5-Aug-2021

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Coll. No. 2645, 5 Aug 2021, characters observed: Perennial herb, to 40 cm., rhizomatous; Stem, glabrous to glandular distally; Leaves, basal (some withered) and lower cauline, petiole 20 mm. + blade 25 mm. × 10 mm. wide, elliptic, margin ciliate, upper cauline, sessile, 25 mm. × 5 mm. wide, lanceolate, finely glandular, tips, small rounded tip (apiculate?); Inflorescence, >leaves, 2-3 heads per stem, showy; Phyllaries, ±equal, in 2 series, 6 mm. × 1 mm. wide, green, with chartaceous margin and tip, glandular; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2-3 mm. + blade 11-12 mm. × 1 mm. wide = 16 mm., white fading lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow, open, bisexual; Pappus, many, well-developed, 2 series, longest 3 mm., tawny; Cypsela, 1.3 mm., compressed, brown, hairy.

Article records that use this photograph:

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Erigeron subtrinervis

Flower head of Coll. No. 1988, Erigeron subtrivervis

Microphotograph 23 February 2019.

Is this "phyllaries subequal appearing to be in a single series" or "phyllaries imbricate clearly in 2 or more series?"

Article records that use this photograph:

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Coll. No. 1988, Erigeron subtrinervis

Photographed 16 January 2019.

Coll. No. 1988, 23 July 2018, characters observed: Perennial herb, 35-40 cm., rhizomatous; Stem, spreading hairy, thinning on older stem, without decurrent lines from leaf bases; Leaves, basal withered, cauline, alternate, petiole, proximal 28 mm., to absent mid- to distal-cauline, blade, 40 mm. × 7 mm. wide, 5.7× long as wide, reduced distally, lanceolate, entire, tips white spinulose only in the most distal leaves; Inflorescence, heads #4-8 per stem, showy, (nearly) flat-topped, >leaves; Peduncles, 25-50 mm.; Involucre, 7 mm. × 14 mm. wide, hemispheric; Phyllaries, 3+ series, ±equal, 7 mm. × 0.7 mm. wide, green, with a purplish tip, margins, flat, scarious, tips, sinuous, acute; Flowers, of 2 kinds; Ray flowers, ±#100 (more than usually described), tube 3 mm. + blade 11 mm. × 1.4 mm. wide, blue, fertile (assumed, at least small stigmas seen); Disk flowers, many, tube 4 mm. + lobes 0.5 mm., yellow; Pappus, 2 series, on both ray and disk flowers, 0.5 mm. and 3.0 mm., bristles, barbellate; Cypsela, 2 mm. × 0.8 mm. wide, compressed front to back, brown.

Article records that use this photograph:

        images/IMGQ4833sm.jpg

Coll. No. 2240, Erigeron subtrinervis

Scanned 19 February 2020.

Plants of Colorado
Asteraceae

Erigeron subtrinervis Rydb. ex Porter & Britton.  Threenerve Daisy.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. 39.3324°N, 105.2685°W. WGS 1984 Elev. 2519 m. Buds nodding, rays 100±, pappus both setae and bristles. Also collected here: Juniperus scopulorum, Symphyotrichum porteri, Chenopodium fremontii. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2240. 16-Sep-2019

Coll. No. 2240, 16 September 2019, characters observed: Perennial herb, to 40 cm.; Stem, hispid (setose or setulose might better describe the pubescence, but this term rarely used by Colorado authors); Leaves, cauline, alternate, blade 27 mm. × 3 mm. wide, reduced distally, oblanceolate, entire, hispid, eglandular, tip, mucronate(-ish); Heads, showy, not overtopped by leaves; Peduncles, 80-100- mm.; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 3± graduated series, 4.5 mm. × 1.2 mm. wide, lower < rest of involucre, chartaceous at base, green center, margin scarious, hispid, glandular, tips purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #100±, tube 2.5 mm. + blade 5 mm. × 0.3 mm. wide, lavender, sterile (?); Disk flowers, many, tube 1.7 mm. + lobes 0.3 mm., expanding gradually, yellow; Pappus, outer crown of dissected scales 0.3-0.4 mm., inner capillary bristles 2.5 mm.; Fruit (cypsela), 1 mm., 4-angled, brown hairy.

Article records that use this photograph:

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Coll. No. 2240, Erigeron subtrinervis

Scanned 19 February 2020.

Plants of Colorado
Asteraceae

Erigeron subtrinervis Rydb. ex Porter & Britton.  Threenerve Daisy.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. 39.3324°N, 105.2685°W. WGS 1984 Elev. 2519 m. Buds nodding, rays 100±, pappus both setae and bristles. Also collected here: Juniperus scopulorum, Symphyotrichum porteri, Chenopodium fremontii. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2240. 16-Sep-2019

Coll. No. 2240, 16 September 2019, characters observed: Perennial herb, to 40 cm.; Stem, hispid (setose or setulose might better describe the pubescence, but this term rarely used by Colorado authors); Leaves, cauline, alternate, blade 27 mm. × 3 mm. wide, reduced distally, oblanceolate, entire, hispid, eglandular, tip, mucronate(-ish); Heads, showy, not overtopped by leaves; Peduncles, 80-100- mm.; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 3± graduated series, 4.5 mm. × 1.2 mm. wide, lower < rest of involucre, chartaceous at base, green center, margin scarious, hispid, glandular, tips purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #100±, tube 2.5 mm. + blade 5 mm. × 0.3 mm. wide, lavender, sterile (?); Disk flowers, many, tube 1.7 mm. + lobes 0.3 mm., expanding gradually, yellow; Pappus, outer crown of dissected scales 0.3-0.4 mm., inner capillary bristles 2.5 mm.; Fruit (cypsela), 1 mm., 4-angled, brown hairy.

Article records that use this photograph:

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Erigeron tracyi

Flowers of Coll. No. 1337, an Erigeron, maybe E. tracyi

Photographed 11 May 2016.

Article records that use this photograph:

        images/IMGQ2564sm.jpg

Habitat of Coll. No. 1133, Erigeron tracyi

Photographed 9 June 2015.

Article records that use this photograph:

        images/IMGQ0784sm.jpg

Habitat of Coll. No. 1337, an Erigeron, maybe E. tracyi

Photographed 11 May 2016.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Erigeron tracyi.
  • Social Trail, North Table Mountain, Jefferson County, Colorado: along trail.
  • Field Notes: Coll. No. 1337.

        images/IMGQ2563sm.jpg

Coll. No. 1337, Erigeron tracyi

Scanned 7 November 2016.

Coll. No. 1337, 11 May 2016, characters observed: Perennial, caudex simple (not stout), Stem, some with prior year's branches assumed to have been stoloniferous; Leaves, petioles, to 26 mm., oblanceolate, 8-12 mm. × 2-5.5 mm. wide, margin entire, short hairy and glandular (especially visible at high magnification), stem leaves not well-developed; Peduncle, spreading to descending multicellular hairs with clear crosswalls, slightly pustular (maybe) or glandular at high magnification; Phyllaries, in 2+ series, 4.5 mm. × 0.7 mm wide, spreading hairy, inner, margin, chartaceous; Receptacle, epaleate; Flowers, of two kinds; Rays, numerous, 7 mm., ligule, 4 mm. × 0.3-0.6 mm. wide, white-pink fading purple; Disk flowers, yellow; Pappus, ray and disk alike, inner, few capillary bristles, 4 mm., outer, short crown of scales, double pappus not particularly disgnostic in Erigeron.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Erigeron tracyi.
  • Social Trail, North Table Mountain, Jefferson County, Colorado: along trail.
  • Field Notes: Coll. No. 1337.

        images/TAS013370Oview.jpg

Coll. No. 1133, Erigeron tracyi

Scanned 9 October 2015.

Coll. No. 1133, 9 Jun 2015, characters observed: Perennial herb, 20 25 cm., non-rhizomatous, stems non-stoloniferous, eglandular hairy throughout, with hairs 0.2-0.4 mm. spreading in all directions; Leaves, basal and cauline, basal, petiole 23 mm. + blade oblanceolate 20 mm. × 4 mm. wide, margin entire, tip acute, some withered at flowering time, cauline, ±sessile, reduced above, but up to 32 mm. × 1.8 mm. wide; Phyllaries, in 2 ±equal series, but not distinctly imbricate, 3 mm., lanceolate, green center, light margins; Receptacle epaleate; Flowers, 2 kinds; Ray flowers, cypsela 0.5 mm. + tube 2 mm. + ligule 4 mm. = 6.5 mm. × 0.8 mm. wide, fertile, tip rounded, white fading purple; Disk flowers, yellow, just beginning to open but lobes appear to be triangular; Pappus of short and long bristles.

Article records that use this photograph:

        images/TAS011330Oview.jpg

Erigeron ursinus

Coll. No. 2607, Erigeron ursinus

Photofraphed 18 December 2021.

Plants of Colorado
Asteraceae

Erigeron ursinus D. C. Eaton.  Bear River Fleabane.

Unnamed meadow on Forest Road 109, Lake County, Colorado. Southern part of the ridge that includes Mount Zion and Buckeye Peak, about 2.7 road miles north of Leadville, access to Forest Road 109 from US Highway 24, 140 km. southwest of Golden. 39.2791°N, 106.3123°W. WGS 1984 Elev. 3096 m. Short, stem hairs appressed, not clear whether the pappus is double. Toward the northeast edge of meadow, also collected hearby: Geum triflorum, Astragalus alpinus, Vicia americana, and Leptosiphon nuttallii.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2607. 15-Jul-2021

Article records that use this photograph:

        images/IMGQ5538sm.jpg

Erigeron vetensis

Coll. No. 2943, Erigeron vetensis.

Photographed 7 November 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Erigeron vetensis Rydb.  Early Bluetop Fleabane.

Guy Gulch, Jefferson County, Colorado. Douglas Mountain Study Area, area along Guy Gulch, about 100 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. 39.8038°N, 105.3679°W. WGS 1984 Elev. 2475 m. Nose of small southeast plunging ridge, with Pediocactus simpsonii, Eriogonum jamesii, and Cercocarpus montanus.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 2943. 6-Jun-2023

Article records that use this photograph:

        images/IMGQ5949sm.jpg

Coll. No. 2465, Erigeron vetensis

Photographed 12 October 2021.

Plants of Colorado
Asteraceae

Erigeron vetensis Rydb.  Early Bluetop Fleabane.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1724°N, 105.3836°W. WGS 1984 Elev. 2527 m. Downed ponderosa pines, with Packera werneriifolia, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich, with Bob Legier & Matt Schweich 2465. 24-May-2021

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Coll. No. 1421, Erigeron vetensis

Scanned 7 December 2016.

Coll. No. 1421, 10 Jun 2016, characters observed: Perennial, to 12 cm., sparse multicellular hairs with clear crosswalls to 0.8 mm., plus very small (<0.1 mm.) peg-like glands, throughout; Leaves, basal, petiole 45 mm. + blade 65 mm. × 5 mm. wide, narrowly oblanceolate, cauline, reduced in size, #4-5, sessile, 15 mm. × 2.1 mm. wide, oblanceolate; Inflorescence, scapose, 21 cm.; Heads, mostly borne singly; Involucre, 5 mm. × 11 mm. wide; Phyllaries, subequal, in 2 rows, 5 mm. × 0.7 mm. wide, margins not ciliate, tip acuminate; Flowers of 2 kinds, Ray flowers, fertile, corolla, 11 mm. × 1.6 mm. wide, ±white, fading blue; Disk flowers, corolla, 4.0 mm., yellow, lobes triangular, style branch appendages triangular; Pappus, short (0.3 mm.) and long (2.2 mm.) capillary bristles; Cypsela, 1.5-1.6 mm.

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Eriophyllum lanatum integrifolium

Coll. No. 681, Eriophyllum lanatum var. integrifolium

Scanned 3 Nov 2011.

Coll. No. 681, 3 Nov 2011: Characters observed while keying: Perennial subshrub, not thistle-like; Leaves entire to 3-(5-)lobed (not compound), margins flat; Headsradiate, > 15 mm wide including ligules (obs: 17-18 mm wide); Phyllaries 5-10 or < 15 (1 obs = 8), keeled; Receptacle naked; Flowers not all ligulate, color yellow; Ray flowers present ±8 (1 obs = 7); Achenes with a small crown-like pappus of scales.

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Eriophyllum monoense

Eriophyllum monoense Rydb.

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Eriophyllum pringlei

Coll. No. 93, Eriophyllum pringlei

Scanned 28 October 2013.

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Coll. No. 116, Eriophyllum pringlei

Scanned 17 October 2013.

Coll. No. 116, 29 April 1997, characters observed while chasing my tail around the Gnaphalieae: Annual, to 2.5 cm., densely wooly; Leaves, alternate, 5.5 mm. × 3 mm. wide, 3-lobed, lobes ±folded abaxially, not spiny; Inflorescence, ray flowers 0, flowers of 2 kinds 1 kind, embedded in wooly hairs; Phyllaries in 1 series, 3 mm. × 0.7 mm wide, membraneous, few, non-overlapping, ±enclosing some outer flowers; Receptacle epaleate; Flowers ≥12 per head; Pappus a low crown; Corolla yellow; Fruit not compressed.

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Coll. No. 116, Eriophyllum pringlei

Scanned 17 October 2013.

Coll. No. 116, 29 April 1997, characters observed while chasing my tail around the Gnaphalieae: Annual, to 2.5 cm., densely wooly; Leaves, alternate, 5.5 mm. × 3 mm. wide, 3-lobed, lobes ±folded abaxially, not spiny; Inflorescence, ray flowers 0, flowers of 2 kinds 1 kind, embedded in wooly hairs; Phyllaries in 1 series, 3 mm. × 0.7 mm wide, membraneous, few, non-overlapping, ±enclosing some outer flowers; Receptacle epaleate; Flowers ≥12 per head; Pappus a low crown; Corolla yellow; Fruit not compressed.

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Eriophyllum wallacei

Collection No. 340.2, Eriophyllum wallacei, woolly easterbonnets.

Grid is 10x10 to the inch.

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Collection No. 340.2, Eriophyllum wallacei, woolly easterbonnets.

Grid is 10x10 to the inch.

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Eriophyllum wallacei

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Eriophyllum wallacei in wash near the Wilson Pass Hills, Mesquite Mountains.

Photograph taken 20 April 2005.

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Partially dissected head of Coll. No. 278, Eriophyllum wallacei

Scanned 28 Jan 2014.

Coll. No. 278, 24 Apr 2001, characters observed: Annual, to 3 cm., cobwebby, not gland-dotted; Leaves, basal and cauline, alternate, to 9 mm., obovate, entire; Peduncle, 8-15 mm.; Inflorescence, composed of two kinds of flowers, some with strap-shaped corollas; Phyllaries, in 1-series, (ஃequal); Receptacle, epaleate, conical, slightly pitted; Ray flowers, 5 mm., yellow, corolla not papery, deciduous; Anther tip awl-like; Pappus of well-developed scales, 0.5 mm., on both ray and disk flowers; Fruit, 2 mm., black, some appressed hairy.

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Coll. No. 118, Eriophyllum wallacei

Scanned 31 October 2013.

From left to right: 2 phyllaries, 1 ray flower, 8 disc flowers.

Coll. No. 118, 29 April 1997, characters observed while keying: Annual, tap-rooted, wooly, to 4 cm.; Leaves, cauline, alternate, 7 mm., sessile or very short-petioled, without embedded oil glands; Inflorescence, some flowers with strap-shaped corollas, head radiate, composed of 2 kinds of flowers; Peduncle, 6-8 mm.; Phyllaries, in 1 series, flat, 5 mm., without embedded oil glands; Receptacle epaleate, conical (TJM2 says “hemispheric”); Pappus, 6-8 short (0.5 mm.) scales, ±equal; Corollas, yellow, ray tube 1 mm. + blade 5 mm.; Anther tips awl-like (almost look hair-like); Fruit, 2 mm.

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Coll. No. 118, Eriophyllum wallacei

Scanned 31 October 2013.

The flower head at right has been partially dissected, and the conical receptacle can be seen.

Coll. No. 118, 29 April 1997, characters observed while keying: Annual, tap-rooted, wooly, to 4 cm.; Leaves, cauline, alternate, 7 mm., sessile or very short-petioled, without embedded oil glands; Inflorescence, some flowers with strap-shaped corollas, head radiate, composed of 2 kinds of flowers; Peduncle, 6-8 mm.; Phyllaries, in 1 series, flat, 5 mm., without embedded oil glands; Receptacle epaleate, conical (TJM2 says “hemispheric”); Pappus, 6-8 short (0.5 mm.) scales, ±equal; Corollas, yellow, ray tube 1 mm. + blade 5 mm.; Anther tips awl-like (almost look hair-like); Fruit, 2 mm.

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Gaillardia aristata

Gaillardia aristata on Dakota Ridge.

Photographed 14 June 2019.

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  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Gaillardia aristata.
  • Field Notes: 14 Jun 2019.

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Coll. No. 1665, Gaillardia aristata

Photographed 14 December 2017.

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Flowerhead of Coll. No. 1454, Gaillardia aristata

Scanned 17 December 2016.

The flower head at left has been partially dissected to show the long stiff setae arising from the receptacle. Inset show pappus of scales on the disk flowers.

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Gnaphalium palustre

Coll. No. 719.1, Gnaphalium palustre

Scanned 20 Nov 2011.

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Grindelia hirsutula

Habitat of Coll. No. 882, Grindelia hirsutula Coll. No. 1039, Cuscuta pacifica

Photographed 10 August 2012.

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Grindelia hirsutula

Photographed 10 August 2012.

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Grindelia squarrosa serrulata

Coll. No. 893, Grindelia squarosa var. serrulata at Conway Summit.

Photographed 24 August 2012.

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Coll. No. 893, Grindelia squarrosa var. serrulata

Scanned 21 August 2013.

Coll. No. 893, 24 Aug 2013, characters observed while keying: Perennial shrub, to 40 cm; Stem glabrous; Leaves alternate, 5 cm x 9 mm wide, oblanceolate, margins serrulate, margin teeth glandular; Inflorescence, head enclosed by involucre, flat-topped, not overtopped by leaves, heads with gummy exudate; Phyllaries in 4-6 series, unequal, eglandular, tips acute, coiled 360°; Receptacle epaleate; Flowers of 2 kinds, many; Pappus, few well-developed awns; Corolla yellow.

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Gutierrezia microcephala

Coll. No. 157, Gutierrezia microcephala

Scanned 20 Jan 2014.

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Coll. No. 143, Gutierrezia microcephala

Scanned 20 Jan 2014.

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Coll. No. 157, Gutierrezia microcephala

Scanned 20 Jan 2014.

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Gutierrezia sarothrae

Gutierrezia sarothrae, common at Buffalo Point.

Photographed 25 September 2022.

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Habitat of Coll. No. 2687, Gutierrezia sarothrae

Photographed 16 August 2021.

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Coll. No. 144, Gutierrezia sarothrae

Scanned 19 Jan 2014.

Coll. No. 144, 3 Oct 1997, characters observed: Perennial, tap-rooted, to 9 cm.; Leaves, alternate, linear, 20 mm. × 1 mm. mm. wide, dotted with embedded oil glands, very few short hairs; Peduncle, 0.5-1.5 mm.; Inflorescence, some flowers with strap-shaped corollas, flowers of two kinds in same heads, Involucre, 3.5 mm. × 2.5-3.0 mm. wide, obconic, not gummy; Phyllary, 2-3 unequal series, inner folded around ovary of ray flowers, dotted with embedded oil glands, tips appressed; Receptacle, epaleate; Rays, #5, yellow; Disk, #4; Pappus, a well-developed crown of scales on both ray and disk flowers; Keys easily to Gutierrezia sarothrae. However, inner phyllaries are folded around ovary of ray flowers, a character not mentioned in keys or description.

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Coll. No. 1289, Gutierrezia sarothrae

Scanned 17 January 2016.

Coll. No. 1289, 8 Sep 2015, characters observed: Shrub, to 30 cm.; Leaves, cauline, alternate, 27 mm. × 0.8 mm. wide, linear; Inflorescence, many subsessile heads in flat-topped clusters; Involucre, 4 mm. × 1.5 mm. wide, obconic; Phyllaries, 2+ series (very waxy and difficult to dissect cleanly); Receptacle, epaleate; Flowers of 2 kinds; Rays, #6-7, fertile, corolla, 3.5 mm., yellow; Disk flowers, #2-3, corolla, 2.5 mm., yellow; Pappus, scales; Cypsela, 0.8 mm.

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Habitat of Coll. No. 1289, Gutierrezia sarothrae

Photographed 9 September 2015.

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Coll. No. 144, Gutierrezia sarothrae

Scanned 19 Jan 2014.

Coll. No. 144, 3 Oct 1997, characters observed: Perennial, tap-rooted, to 9 cm.; Leaves, alternate, linear, 20 mm. × 1 mm. mm. wide, dotted with embedded oil glands, very few short hairs; Peduncle, 0.5-1.5 mm.; Inflorescence, some flowers with strap-shaped corollas, flowers of two kinds in same heads, Involucre, 3.5 mm. × 2.5-3.0 mm. wide, obconic, not gummy; Phyllary, 2-3 unequal series, inner folded around ovary of ray flowers, dotted with embedded oil glands, tips appressed; Receptacle, epaleate; Rays, #5, yellow; Disk, #4; Pappus, a well-developed crown of scales on both ray and disk flowers; Keys easily to Gutierrezia sarothrae. However, inner phyllaries are folded around ovary of ray flowers, a character not mentioned in keys or description.

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Coll. No. 1289, Gutierrezia sarothrae

Scanned 17 January 2016.

Coll. No. 1289, 8 Sep 2015, characters observed: Shrub, to 30 cm.; Leaves, cauline, alternate, 27 mm. × 0.8 mm. wide, linear; Inflorescence, many subsessile heads in flat-topped clusters; Involucre, 4 mm. × 1.5 mm. wide, obconic; Phyllaries, 2+ series (very waxy and difficult to dissect cleanly); Receptacle, epaleate; Flowers of 2 kinds; Rays, #6-7, fertile, corolla, 3.5 mm., yellow; Disk flowers, #2-3, corolla, 2.5 mm., yellow; Pappus, scales; Cypsela, 0.8 mm.

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Helenium bigelovii

Coll. No. 1027, Helenium bigelovii

Scanned 2 February 2015.

Helenium bigelovii A. Gray. Bigelow's Sneeze Weed.

Walker Creek (Lower), Mono County, California. Pumice Valley, along the bank of Walker Creek, just above the crossing of old US Highway 395, growing in the creek bank and hanging over the creek. 37.9038°N, 119.1028°W. WGS 1984. Elev. 2090 m.

Coll. No. 1027, 24 Jul 2013, characters observed while keying: Perennial, Stems, to 50 cm. (hanging over a creek from the bank); Leaves, alternate, cauline, lanceolate, slightly arcuate, entire, largest 13 cm. × 2.6 cm. wide, decurrent on stem 4.5 cm. forming wings; Heads, single on peduncle 15 cm., composed of two kinds of flowers, some with strap-shaped corollas; Phyllaries, 2 series, overlapping slightly, ±equal, reflexed; Receptacle, epaleate, smooth, spheric; Ray, yellow, corolla withering (not papery); Pappus of well-developed scales, #±6, ± equal.

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Helianthella quinquenervis

Coll. No. 1990, Helianthella quinquenervis

Photographed 19 January 2019.

Coll. No. 1990, 23 Jul 2018, characters observed: Perennial herb, to 80 cm., rhizomatous; Stem, proximal glabrous to distal tangled multicellular hairy; Leaves, all cauline (some very proximally cauline), opposite, petiole, 35 mm., blade 110 mm. × 27 mm. wide, mid-cauline the largest, elliptic, entire, sparsely short hairy throughout, eglandular; Inflorescence, heads, 1 terminal, sometimes a smaller pair in upper axils, showy, >leaves, ±nodding; Peduncles (axillary), 70 mm.; Involucre, 15 mm. × 33 mm. wide, spheric; Phyllaries, 3± series, 28 mm. × 6 mm. wide, green flat, margin, ciliate; Receptacle, paleate; Palea, 11 mm. × 2.5 mm. wide, scarious, soft; Flowers, 2 kinds; Ray flowers, #20-24, tube 5 mm. + blade 23 mm. × 6 mm. wide, yellow, sterile; Disk flowers, many, tube 1.5 mm. + throat 3 mm. + lobes 0.5 mm., throat expanding abruptly, yellow; Pappus, disk flowers only, two types, 1.0 mm. scales in an outer ring, 2.5 mm. #2 awn-like scales; Cypsela, 7.4 mm. × 3 mm. wide, obovate, compressed side-to-side, black, hairy.

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Helianthus

Comparison of involucres of two taxa of Helianthus

Scanned 31 December 2017.

H. pumilus on the left, and H. pauciflorus ssp. subrhomboideus on the right.

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Helianthus pauciflorus

Sims (1818) Plate 2020 of Helianthus diffusus.

Downloaded from Biodiversity Heritage Library 30 December 2022. From Sims (1818) Curtis's Botanical Magazine, Plate 2020 and following discussion.

Helianthus diffusus. Missouri Sun-Flower.
********************
Class and Order.
Syngenesia Polygamia Frustranea.
Generic Character.
Recept. paleaceum, planum. Pappus diphyllus. Cal. imbricatus, subsquarrosus.
Specific Character.
Helianthus diffusus ; caule hispido divaricato, foliis ovatis rigidis scabris serrulatis alternis oppositisque, pedunculis longissimis unifloris.

Descr. Stem angular, purple, hispid : branches distant, rambling, bearing one terminal flower on a very long peduncle. The whole plant is clothed with stiff, stinging hairs, scarcely exceeds two feet in height, but spreads wide. Leaves both opposite and alternate, oblong-ovate, rigid, very rough. Calyx imbricated, scales ovate, in four series, smooth, with villous edges. Flowers large : rays about twenty, oblong-ovate, plicate, three-toothed, of a very full yellow colour. Floscules of the disk yellow: tube filiform pedicle-like : border cylindrical. Anthers dark purple. Stigmas revolute, golden yellow. Chaff of the receptacle linear-lanceolate, concave, green. Germens three-cornered, crowned with a two-leaved, awl-shaped pappus.

From its rambling manner of growth, this plant does not appear very sightly in the garden ; but is one of the most desirable flowers imaginable for ornamenting rooms, as it lives long in water, and from its spreading branches, the flowers dispose well, and make a very brilliant appearance.

A hardy perennial. Blooms in August and September. Our drawing was made from a specimen communicated by Aylmer Bourke Lambert, Esq. three years ago, out of his collection at Boyton, where it was raised from seeds collected on the borders of the Missouri, by Mr. Nuttall ; but our description was taken at the Botanic Garden at Chelsea in August last.

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Helianthus pauciflorus subrhomboideus

Mature flower head of Helianthus pauciflorus subsp. subrhomboideus

Photographed 3 Sep 2016.

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Coll. No. 1260, Helianthus pauciflorus ssp. subrhomboideus

Photographed 26 July 2015.

Coll. No. 1260, 26 Jul 2015, characters observed: Perennial from rhizomes (not a tap-rooted annual), to 1 mm.; Leaves, cauline, opposite, 135 mm. × 32 mm. wide, rhomboid, margin, straight, short-toothed, green, not glaucus, adaxial scabrous-hispid, abaxial scabrous; Inflorescence, solitary heads on long peduncles; Peduncle, 25 cm.; Phyllaries in 3+ imbricate series, all similar, 8-9 mm. × 4 mm. wide, ovo-lanceolate, margin, ciliate, tips, erect; Receptacle, hemispheric, paleate; Paleae, 8 mm., ciliate distally; Rays, sterile, pappus, 2 scales 2.5 mm., corolla, 24 mm. × 6 mm. wide, yellow; Disk flowers, fertile, pappus, crown of scales with 2 elongated to 4 mm., corolla, 5 mm., yellow to dark red distally; cypsela, 3.3 mm., compressed quadrangular.

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Head of Coll. No. 1260, Helianthus pauciflorus ssp. subrhomboideus

Scanned 26 December 2015.

Coll. No. 1260, 26 Jul 2015, characters observed: Perennial from rhizomes (not a tap-rooted annual), to 1 mm.; Leaves, cauline, opposite, 135 mm. × 32 mm. wide, rhomboid, margin, straight, short-toothed, green, not glaucus, adaxial scabrous-hispid, abaxial scabrous; Inflorescence, solitary heads on long peduncles; Peduncle, 25 cm.; Phyllaries in 3+ imbricate series, all similar, 8-9 mm. × 4 mm. wide, ovo-lanceolate, margin, ciliate, tips, erect; Receptacle, hemispheric, paleate; Paleae, 8 mm., ciliate distally; Rays, sterile, pappus, 2 scales 2.5 mm., corolla, 24 mm. × 6 mm. wide, yellow; Disk flowers, fertile, pappus, crown of scales with 2 elongated to 4 mm., corolla, 5 mm., yellow to dark red distally; Crysela, 3.3 mm., compressed quadrangular.

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Coll. No. 1260, Helianthus pauciflorus ssp. subrhomboideus

Photographed 27 December 2015.

Coll. No. 1260, 26 Jul 2015, characters observed: Perennial from rhizomes (not a tap-rooted annual), to 1 mm.; Leaves, cauline, opposite, 135 mm. × 32 mm. wide, rhomboid, margin, straight, short-toothed, green, not glaucus, adaxial scabrous-hispid, abaxial scabrous; Inflorescence, solitary heads on long peduncles; Peduncle, 25 cm.; Phyllaries in 3+ imbricate series, all similar, 8-9 mm. × 4 mm. wide, ovo-lanceolate, margin, ciliate, tips, erect; Receptacle, hemispheric, paleate; Paleae, 8 mm., ciliate distally; Rays, sterile, pappus, 2 scales 2.5 mm., corolla, 24 mm. × 6 mm. wide, yellow; Disk flowers, fertile, pappus, crown of scales with 2 elongated to 4 mm., corolla, 5 mm., yellow to dark red distally; cypsela, 3.3 mm., compressed quadrangular.

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Helianthus pumilis

Coll. No. 1210, Helianthus pumilis

Photographed 13 July 2015.

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Coll. No. 1426, Helianthus pumilis

Scanned 10 December 2016.

Perennial herb, to 40 cm.; Leaves, cauline, alternate, simple, petiole 7 mm. + blade 86 mm. × 30 mm. wide, adaxial, pustular hairy, hairs multicellular, crosswalls clear, abaxial, glandular and hairy; Inflorescence, heads borne singly on leafy stems, peduncles to 8 cm., hairy, glandular; Phyllaries in 2+ series, similar, 6-10 mm. × 2.0-3.5 mm. wide, erect, ovate, hairy abaxially, margins ciliate, tip acuminate, not as “stiff” or “tough” as those of Coll. No. 1199; Receptacle, slightly convex, paleate; Disk, 17 mm. wide; Palea, 9 mm., tip, glandular, hairy distally; Flowers, 2 kinds; Ray flowers, sterile, #10-12, corolla, 17-25 mm. × 6-9 mm. wide, yellow; Disk flowers, corolla, 5-6 mm., yellow, lobes, #5, 1 mm., yellow, anther appendages reddish-brown; Pappus of few long (2.5 mm.) aristate scales; Cypsela, not latterally compressed. Described from Coll. No. 1210, 13 Jul 2015, and Coll. No. 1426, 15 June 2016.

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Helianthus pumilus

Coll. No. 1704, Helianthus pumilus

Photographed 30 December 2017.

The opposite leaves are a little unusual.

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Heliomeris multiflora nevadensis

Coll. No. 403, Heliomeris multiflora var. nevadensis

Scanned 22 October 2013.

Coll. No. 403, 25 May 2004, characters observed while attempting to key: Perennial, woody at base, to 35 cm., generally short appressed hairy throughout; Leaves, cauline, opposite, sessile or very short petioled, 30 mm. × 5 mm. wide, bases fused around stem, narrowly elliptic, margin entire; Inflorescence, single heads, terminal or axillary, ray flowers immature, reduced, or absent; Phyllaries in 2+ overlapping series, ±equal, 5.5 mm. × 1 mm., lanceolate, entirely green, margins flat, none of the first two series subtending ray flowers; Receptacle convex or conic, paleate; Palea flat, or wrapped around ovary only at base, awned or sharp-pointed; Pappus 0; Corolla, yellow or orange; Anthers, 5, bases rounded but flowers quite immature; Ovary ±thick, not ciliate; Style immature, dilated(?).

Flowers are immature. Similarity to Sanvitalia noted when collected, except this is definitely a perennial woody at base, and out of range for Sanvitalia.

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Coll. No. 403, Heliomeris multiflora var. nevadensis

Scanned 22 October 2013.

Coll. No. 403, 25 May 2004, characters observed while attempting to key: Perennial, woody at base, to 35 cm., generally short appressed hairy throughout; Leaves, cauline, opposite, sessile or very short petioled, 30 mm. × 5 mm. wide, bases fused around stem, narrowly elliptic, margin entire; Inflorescence, single heads, terminal or axillary, ray flowers immature, reduced, or absent; Phyllaries in 2+ overlapping series, ±equal, 5.5 mm. × 1 mm., lanceolate, entirely green, margins flat, none of the first two series subtending ray flowers; Receptacle convex or conic, paleate; Palea flat, or wrapped around ovary only at base, awned or sharp-pointed; Pappus 0; Corolla, yellow or orange; Anthers, 5, bases rounded but flowers quite immature; Ovary ±thick, not ciliate; Style immature, dilated(?).

Flowers are immature. Similarity to Sanvitalia noted when collected, except this is definitely a perennial woody at base, and out of range for Sanvitalia.

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Coll. No. 403, Heliomeris multiflora var. nevadensis

Scanned 22 October 2013.

Coll. No. 403, 25 May 2004, characters observed while attempting to key: Perennial, woody at base, to 35 cm., generally short appressed hairy throughout; Leaves, cauline, opposite, sessile or very short petioled, 30 mm. × 5 mm. wide, bases fused around stem, narrowly elliptic, margin entire; Inflorescence, single heads, terminal or axillary, ray flowers immature, reduced, or absent; Phyllaries in 2+ overlapping series, ±equal, 5.5 mm. × 1 mm., lanceolate, entirely green, margins flat, none of the first two series subtending ray flowers; Receptacle convex or conic, paleate; Palea flat, or wrapped around ovary only at base, awned or sharp-pointed; Pappus 0; Corolla, yellow or orange; Anthers, 5, bases rounded but flowers quite immature; Ovary ±thick, not ciliate; Style immature, dilated(?).

Flowers are immature. Similarity to Sanvitalia noted when collected, except this is definitely a perennial woody at base, and out of range for Sanvitalia.

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Helminthotheca echioides

Coll. No. 1034, Helminthotheca echioides

Scanned 28 Dec 2014.

Coll. No. 1034, 31 August 2013, characters observed while keying: Herbaceous annual or biennial, to 35 cm., rigid hairs with hooked branches at tip; Sap slightly milky (seen mostly at base of phyllaries); Leaves basal and cauline, alternate, 11 cm x 18 mm wide, oblanceolate, slightly glandular, margins entire, not spine-tipped; Involucre 14 mm; Phyllaries in 4-5 series, the outer series are wide and stand away from the rest, the inner series are narrow, appendaged at tip; Receptacle epaleate; Flowers all rays; Pappus of well developed bristles, ±equal, broader at base, plumose; Corolla yellow, readily withering; Fruit 3 mm x 0.5 mm wide, brown, annular ridges or decoration giving the appearance of a small insect pupa.

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Coll. No. 1034, Helminthotheca echioides

Scanned 28 Dec 2014.

Coll. No. 1034, 31 August 2013, characters observed while keying: Herbaceous annual or biennial, to 35 cm., rigid hairs with hooked branches at tip; Sap slightly milky (seen mostly at base of phyllaries); Leaves basal and cauline, alternate, 11 cm x 18 mm wide, oblanceolate, slightly glandular, margins entire, not spine-tipped; Involucre 14 mm; Phyllaries in 4-5 series, the outer series are wide and stand away from the rest, the inner series are narrow, appendaged at tip; Receptacle epaleate; Flowers all rays; Pappus of well developed bristles, ±equal, broader at base, plumose; Corolla yellow, readily withering; Fruit 3 mm x 0.5 mm wide, brown, annular ridges or decoration giving the appearance of a small insect pupa.

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        images/TAS010340Oview.jpg

Heterotheca foliosa

Coll. No. 2226, Heterotheca foliosa

Scanned 16 February 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Heterotheca foliosa (Nutt.) Shinners.  Hairy False Goldenaster.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, northwest corner of Ranson/Edwards, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 2.1 mi generally north on Plainview Road, then 350 m. west. 39.8974°N, 105.2751°W. WGS 1984 Elev. 2036 m. Area with down, burned ponderosa pines, also collected here: Ceanothus fendleri, nearby Amorpha nana, Danthonia spicata, and Sorghastrum nutans.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich, with Cindy Trujillo 2226. 10-Sep-2019

Not as easily distinguished from H. villosa as other collections.

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        images/TAS022260Infl.jpg

Inflorescence of Coll. No. 2177, Heterotheca foliosa

Scanned 28 January 2020.

Plants of Colorado
Asteraceae

Heterotheca foliosa (Nutt.) Shinners.  Hairy False Goldenaster.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60 km. south of the GNIS location of Golden. 39.3407°N, 105.261°W. WGS 1984 Elev. 2412 m. Scent a kind of foetid lemon-pine. Also collected here: Lithospermum multiflorum, Geranium caespitosum, Ipomopsis aggregata ssp. collina, Bromus pumpellianus, and Koeleria macrantha. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2177. 23-Jul-2019

Coll. No. 2177, 23 July 2019, characters observed: Perennial herb, to 40 cm.; Stem, hispid, glandular; Leaves, proximal mostly withered, but they appear to have been oblanceolate; distal, 35 mm. × 9 mm. wide, sessile, oblanceolate, glandular, hispid, hairs are curved, but not really appressed, so not strigose, Bracts, #1-4, surpassing heads; Phyllaries, 2+ graduated series; Flowers of 2 kinds; Ray flowers, tube 4 mm. + blade 17 mm. ×1 mm. wide, yellow; Disk flowers, tube 6 mm. + lobes 1.5 mm = 7.5 mm., yellow; Pappus, capillary bristles 2 kinds, short, 1 mm., long, 7 mm. Cypsela, 2 mm., shaggy hairy;

In Harrington (1954): Crysopsis fulcrata Greene [=Heterotheca fulcrata (Greene) Shinners], and not Chrysopsis foliosa Nutt. because the involucres are definitely glandular. In Weber & Wittman (2012): Heterotheca villosa (Pursh) Shinners. H. fulcrata requires foliage very densely appressed pubescent, the plant gray in aspect, glands hardly visible. H. foliosa (Nutt.) Shinners is not recognized. In Ackerfield (2015): Heterotheca foliosa (Nutt.) Shinners [H. fulcrata (Greene) Shinners misapplied].

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        images/TAS021770Infl.jpg

Coll. No. 1258, Heterotheca foliosa

Scanned 25 December 2015.

Coll. No. 1258, 26 Jul 2015, characters observed: Perennial, to 40 cm.; Stem, spreading hairy, glandular; Leaves, cauline, alternate, 33 mm. × 9 mm. wide, oblong, margin entire, tip acute, appressed hairy; Peduncle, 15 mm.; Bracts, leafy, 10-16 mm. × 2.5 mm., lanceolate, some exceeding heads by 4-7 mm.; Involucre, 9 mm. × 14 mm. wide; Phyllaries, in 4+ graduated series, 4-9 mm. × 1 mm. wide, lanceolate, slightly keeled proximally, mostly green, abaxial surface glandular and hairy, margin hairy; Receptacle, epaleate, short (0.5 mm.) scales; Flowers, 2 kinds; Rays, sterile, corolla, 11 mm., yellow; Disk flowers, corolla, 7 mm., yellow; Pappus, short (0.6 mm.) and long (6 mm.) bristles, ≥disk corolla; cypsela, 1.3 mm., hairy.

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        images/TAS012580Oview.jpg

Heterotheca grandiflora

Coll. No. 883, Heterotheca grandiflora

Photographed 17 August 2012.

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        images/IMG30570sm.jpg

Habitat of Coll. No. 883, Heterotheca grandiflora

Photographed 17 August 2012.

Couldn't tell what the sign said, as it was obscured by the Pampas grass. But, I'm pretty sure it didn't say, "No botanical collecting."

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Heterotheca pumila

Coll. No. 3105, Heterotheca pumila.

Photographed 8 January 2024.

Plants of Colorado
Asteraceae

Heterotheca pumila (Greene) Semple.  Alpine False Goldenaster.

West Tennessee Creek, Lake County, Colorado. Lowest terrace above West Tennessee Creek, 588 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. 39.3458°N, 106.3656°W. WGS 1984 Elev. 3171 m. First terrace above creek, sunny and dry, with Arenaria sp. and Erigeron sp.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3105. 18-Jul-2023

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        images/IMGQ6039sm.jpg

Coll. No. 1986, Heterotheca pumila

Photographed 15 January 2019.

Coll. No. 1986, 23 July 2018, characters observed: Perennial herb, 12 cm.; Stem, purplish, short and long multicellular hairs, glandular; Leaves, cauline, alternate, well-distributed along stem, petiole, 10 mm., blade, 25 mm. × 4 mm. wide, reduced distally, oblanceolate, hairy and somewhat glandular, margin, entire, slightly revolute; Inflorescence, heads, 1 per stem, showy, >leaves; Involucre, 7 mm. × 10 mm. wide, bowl-shaped, glandulo-hispid; Phyllaries, 3+ series, 3.3-7 mm. × 0.6-1.2 mm. wide, prominent mid-vein, green center, scarious margins; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #6-8, tube 4.5 mm. + blade 8.5 mm. × 2 mm. wide, yellow, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., yellow, open; Pappus, many, 2 series, both ray and disk flowers, bristles, 0.9, 5.0 mm., barbelate; Cypsela, 2.5-3.0 mm. × 0.7 mm. wide, brown, hairy.

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Coll. No. 3105, Heterotheca pumila

Photographed 18 July 2023.

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Heterotheca villosa

Coll. No. 1209, Heterotheca villosa

Photographed 13 July 2015.

Possibly var. nana.

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        images/IMGQ1254sm.jpg

Appearance of Heterotheca villosa in the field

Photographed 10 August 2014.

Possibly var. nana.

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        images/IMG40346sm.jpg

Coll. No. 1209, Heterotheca villosa

Collected 7 December 2015.

Possibly var. nana.

Coll. No. 1209, 13 Jul 2015, characters observed: Perennial herb, to 40 cm.; Stem, curved multicellular hairs, glands; Leaves, cauline, alternate, 13 mm. × 4 mm. wide, oblong to oblanceolate, margin entire (some contorted after drying), tip small pointed, curved hairs, yellow glandular; Inflorescence, 1-7 heads per stem, single heads on short pedicels, flowers of 2 kinds; Bracts, unremarkable; Phyllaries, in 2+ graduated series, 2-7 mm. × <1 mm. wide, lance-linear, tips erect, hairy, glandular; Receptacle epaleate, hemispheric; Rays, sterile, corolla, 10 mm. × 1.3 mm. wide, yellow; Disk flowers, corolla, 5.0 mm., yellow; Pappus, outer of short scales and inner of long bristles (easier seen in mature fruit, in flower will appear as one series of long and short bristles), longest 5.5-6.0 mm., ≥disk flowers, short plumose; cypsela, 2.6 mm. × 1.2 mm. wide, hairy.

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        images/TAS012090Oview.jpg

Coll. No. 1293, Heterotheca villosa

Scanned 19 January 2016.

Possibly var. villosa.

Coll. No. 1293, 9 Sep 2015, characters observed: Perennial herb, to 80 cm.; Stem, short and spreading long hairs, glandular; Leaves, cauline, alternate, 30 mm. × 9 mm. wide, mid-cauline oblong, reduced and ovate-lanceolate above, sessile, strigose, eglandular margin entire, not contorted after drying; Involucre, 8-10 mm. × 9-12 mm. wide; Phyllaries in 3+ imbricate graduated series, 4.5-8 mm. × 1.3 mm. wide, tip obtuse, dark spot, abaxially spreading hairy, margin ciliate, eglandular; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, 9 mm., yellow; Disk flowers, corolla, 6 mm., yellow; Pappus, 2 series of capillary bristles, outer 1 mm., and inner 5.5 mm.

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        images/TAS012930Oview.jpg

Flower of Heterotheca villosa

Scanned 10 August 2014.

Possibly var. nana.

There are visible scales outside the bristles on the mature fruit to right of center.

Perennial herb, to 50 cm.; Leaves, cauline alternate, entire, 1-veined, distal perpendicular to stems, hairs > glands; Heads solitary, with both ray and disk flowers; Phyllaries in 2+ series, unequal, to 7 mm.; Rays, 9 mm.; Pappus double, outer narrow scales ≤ 1 mm. (easier to see on mature fruit), inner bristles, 6.5 mm., white; Fruit, disk 3 mm., hairy.

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        images/TAS010550Fl.jpg

Coll. No. 1664, Heterotheca villosa

Scanned 14 December 2017.

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        images/TAS016640Oview.jpg

Coll. No. 1521, Heterotheca villosa

Scanned 13 January 2017.

Possibly var. villosa.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, 1.02 km. southwest of the Mesa Spur trailhead on 58th Avenue, 4.66 km. north northeast of the GNIS location of Golden. 39.7953°N, 105.2039°W. WGS 1984 Elev. 1848 m. Mixed grasses and forbs upslope of North Table Loop.

Coll. No. 1521, 29 July 2016, characters observed: Perennial herb, to 35 cm., eglandular and hispid throughout; Leaves, cauline, alternate, sessile, 35 mm. × 18 mm. wide, ovate, entire, not contorted after drying; Heads, borne singly on leafy peduncles to 50 mm., subtended by a pair of bracts, sometimes equalling but not exceeding the head, with cilia to 1.2 mm. proximally; Phyllaries, 3+graduated series, 3-8 mm. × 1 mm. wide, more toward strigose than hispid, tips, dark brown; Receptacle, epaleate, hemispheric; Flowers, 2 kinds; Rays, corolla, 9 mm., yellow; Disk flowers, corolla, 6.5 mm., yellow; Pappus, short (1 mm.) and long (5-6 mm.) capillary bristles; Cypsela, 3 mm., hairy.

Perhaps an intermediate between Heterotheca villosa and H. foliosa. See discussion in Ackerfield (2015) Flora of Colorado.

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Hieracium albiflorum

Rosette of Coll. No. 2150, Hieracium albiflorum

Photographed 13 July 2019.

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Rosettes of Hieracium albiflorum.

Photographed 4 June 2021.

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Coll. No. 2150, Hieracium albiflorum

Photographed 13 July 2019.

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        images/20190713_105730sm.jpg

Coll. No. 2150, Hieracium albiflorum

Photographed 6 December 2019.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Hieracium albiflorum Hook.  White-Flower Hawkweed.

Lippincott Property, Jefferson County, Colorado. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest corner near the railroad tracks, 22.3 km. north northwest of the GNIS location of Golden. 39.9019°N, 105.2813°W. WGS 1984 Elev. 2095 m. Non-rhizomatous, fibrous roots, leaves mostly rosette, hairy, nearly scapose, flowers ligulate, white. In ponderosa pine woodland, thick forest duff, with Juniperus communis and J. scopulorum, and Berberis repens. Most plants show some evidence of herbivory.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2150. 13-Jul-2019

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        images/IMGQ5109sm.jpg

Inflorescence of Coll. No. 2150, Hieracium albiflorum

Photographed 13 July 2019.

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        images/20190713_105741sm.jpg

Hulsea vestita vestita

Hulsea vestita with bee as seen in Big Sand Flat.

Photograph taken 5 July 2010.

Article records that use this photograph:

  • Inyo National Forest Road 01S04A, Mono County, California: 10300.
  • Field Notes: 5 Jul 2010.

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Habit of Hulsea vestita in Big Sand Flat.

Photograph taken 5 July 2010.

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Coll. No. 641, Hulsea vestita

Scanned 7 June 2011.

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Hulsea vestita in Big Sand Flat.

Photograph taken 5 July 2010.

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Coll. No. 464, Hulsea vestita var. vestita

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        images/TAS004640oview.jpg

Pumica Alpinegold (Hulsea vestita var. vestita)

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        images/MLF_V1_Slide_37.jpg

Hymenopappus filifolius cinereus

Coll. No. 3095, Hymenopappus filifolius var. cinereus.

Photographed 4 January 2024.

Plants of Colorado
Asteraceae

Hymenopappus filifolius Hook. var. cinereus (Rydb.) I. M. Johnst.  Fine Leaved Wooly White.

Salt Creek, Park County, Colorado. Along the fence line, about 636 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. 38.9613°N, 106.0021°W. WGS 1984 Elev. 2828 m. In stiff, dry soil that appears subject to sheet flow, with: Penstemon teucroides and Packera fendleri.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3095. 17-Jul-2023

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        images/IMGQ6032sm.jpg

Hymenopappus filifolius polycephalus

Coll. No. 1504, Hymenopappus filifolius var. polycephalus

Scanned 8 January 2017.

Lower slopes on the west side of North Table Mountain, along side of North Table Loop, just a few meters north of the access road to the trailhead, 3.2 km. north northwest of the GNIS location of Golden. 39.7833°N, 105.2298°W. WGS 1984 Elev. 1835 m.

Coll. No. 1504, 13 July 2016, characters observed: Perennial herb, to 60 cm., ±tomentose throughout; Leaves, basal, petiole 35 mm. + blade 75 mm. × 30 mm. wide, very deeply pinnafitid, segments filiform, ultimate divisions 8-18 mm., cauline, #4-5, similar, reduced above, bases conspicuously tomentose; Inflorescence, heads borne singly on peduncles, 22-45 mm., #(5) 7 (15); Involucre, 8 mm. × 15 mm. wide; Receptacle, epaleate, flat; Phyllaries, 2 series, 7 mm. × 2.5 mm. wide; inner > outer, margins chartaceous, tips broad scarious; Flowers, 1 kind; Disk flowers, corolla, yellow; Pappus, scales, 1.2 mm.; Achenes, 5 mm., hairy all over, more so on the angles.

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        images/TAS015040Oview.jpg

Flower heads and basal leaf of Coll. No. 1427, Hymenopappus filifolius var. polycephalus

Scanned 11 December 2016.

Coll. No. 1427, 15 June 2016, characters observed: Perennial herb, to 60 cm.; Leaves, basal, to 140 mm. × 50 mm., oblanceolate in shape, base conspicuously tomentose, bipinnately dissected to filiform segments, ultimate leaf divisions 12-19 mm., cauline, reduced above, #7-8; Heads, 10-16 per stem; Phyllaries, in 1 series, 6 mm. × 2.8-4.0 mm. wide, green, tomentose, margins chartaceous; Flowers, 1 kind; Disk flowers, corollas, 3.5 mm., yellow; Pappus, crown of scales, 0.8-1.2 mm.; Cypsela, 3 mm., hairy all over to just on margins.

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        images/TAS014270Det.jpg

Coll. No. 1663, Hymenopappus filifolius var. polycephalus

Photographed 12 December 2017.

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        images/IMGQ4489sm.jpg

Hymenoxys cooperi

Coll. No. 289, Hymenoxys cooperi

Scanned 29 Jan 2014.

Coll. No. 289, 26 May 2001, characters observed: Annual, tap-rooted, to 40 cm.; Leaves, basal and cauline, alternate, dissected into linear lobes, glandular punctate; Inflorescence, composed of 2 kinds of flowers; Phyllaries, in 2 equal series (appearing as though outer < inner), outer basally fused, without large glands; Receptacle epaleate; Pappus of well-developed scales on ray and disk flowers.

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        images/TAS002890Oview.jpg

Hymenoxys grandiflora

Hymenoxys grandiflora at Pass Lake

Photographed 28 June 2018.

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Hymenoxys richardsonii floribunda

Coll. No. 2189, Hymenoxys richardsonii var. floridunda

Photographed 2 Februrary 2020.

Plants of Colorado
Asteraceae

Hymenoxys richardsonii (Hook.) Cockerell var. floribunda (A. Gray) Parker.  Colorado Rubberweed.

Trout Creek Pass, Chaffee County, Colorado. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. 38.9082°N, 105.9888°W. WGS 1984 Elev. 2883 m.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2189. 5-Aug-2019

Coll. No. 2189, 5 August 2019, characters observed: Perennial, sub-shrub, 20 cm., caudex, branched, woody; Stem, clusters of tomentum, glandular; Leaves, basal and cauline, 25-60 mm. × 15-15 mm. wide, reduced distally, pinnately lobed into 3 linear segments, 0.8-1.8 mm. wide, glandular punctate, little bits of tomentum here and there, margins, entire; Inflorescence, head enclosed by an involucre, 1 per stem, showy, flat-topped, not overtopped by leaves; Peduncles, 40 mm., inconspicuously glandular; Involucre, 5 mm. × 10 mm. wide, hemispheric, glandular, scattered tomentose; Phyllaries, 2 series, series 1, 4.5 mm. × 2 mm. wide, fused ½, lanceolate, series 2, 4 mm. × 1.5 mm. wide, widest above middle; Receptacle, conic, epaleate; Flowers, 2 kinds; Ray flowers, #8-10, tube 1.9 mm. + blade 5.5 mm. × 4.8 mm. wide, obovate, yellow, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.4 mm., throat expanding, yellow; Pappus, few, well-developed scales, 1.8 mm., ±equal; Fruit (cypsela), 2.5 mm., hairy.

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        images/IMGQ5121sm.jpg

Coll. No. 2564, Hymenoxys richardsonii var. floribunda

Photographed 1 December 2021.

Plants of Colorado
Asteraceae

Hymenoxys richardsonii (Hook.) Cockerell var. floribunda (A. Gray) Parker.  Colorado Rubberweed.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2871 m. Open hillside with pines, also collected here: Oreocarya thyrsiflora, Penstemon barbatus, Chaenactis douglasii, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2564. 12-Jul-2021

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        images/IMGQ5507sm.jpg

Distal leaves and inflorescence of Coll. No. 2189, Hymenoxys richardsonii var. floridunda

Scanned 2 Februrary 2020.

Plants of Colorado
Asteraceae

Hymenoxys richardsonii (Hook.) Cockerell var. floribunda (A. Gray) Parker.  Colorado Rubberweed.

Trout Creek Pass, Chaffee County, Colorado. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. 38.9082°N, 105.9888°W. WGS 1984 Elev. 2883 m.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2189. 5-Aug-2019

Coll. No. 2189, 5 August 2019, characters observed: Perennial, sub-shrub, 20 cm., caudex, branched, woody; Stem, clusters of tomentum, glandular; Leaves, basal and cauline, 25-60 mm. × 15-15 mm. wide, reduced distally, pinnately lobed into 3 linear segments, 0.8-1.8 mm. wide, glandular punctate, little bits of tomentum here and there, margins, entire; Inflorescence, head enclosed by an involucre, 1 per stem, showy, flat-topped, not overtopped by leaves; Peduncles, 40 mm., inconspicuously glandular; Involucre, 5 mm. × 10 mm. wide, hemispheric, glandular, scattered tomentose; Phyllaries, 2 series, series 1, 4.5 mm. × 2 mm. wide, fused ½, lanceolate, series 2, 4 mm. × 1.5 mm. wide, widest above middle; Receptacle, conic, epaleate; Flowers, 2 kinds; Ray flowers, #8-10, tube 1.9 mm. + blade 5.5 mm. × 4.8 mm. wide, obovate, yellow, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.4 mm., throat expanding, yellow; Pappus, few, well-developed scales, 1.8 mm., ±equal; Fruit (cypsela), 2.5 mm., hairy.

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        images/TAS021890Dist.jpg

Ionactis alpina

Leaves of Coll. No. 966, Ionactis alpina

Scanned on 8 Feb 2014.

Coll. No. 966, 22 May 2013, characters observed: Perennial, tufted herb, to 8 cm.; Stem unarmed; Leaves, alternate, sessile, 5.5 mm. × 2 mm. wide, firm, oblong, tip acuminate, margin white, entire, scabrous; Inflorescence of two kinds of flowers, radiate; Heads solitary; Receptacle, epaleate (single ring of paleae buried among the disk flowers); Phyllaries, in 3 ±defined series, graduated, outer < inner, inner bases white, tips herbaceous, margin scarious, veins 1, resin-filled unknown; Rays, blue, oblong, style present; Disk, corolla, yellow; Pappus of well-developed bristles, #>20, few short outer bristles, many long inner bristles, cylindric, short plumose.

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        images/TAS009660Stem.jpg

Coll. No. 966, Ionactis alpina

Scanned on 8 Feb 2014.

Coll. No. 966, 22 May 2013, characters observed: Perennial, tufted herb, to 8 cm.; Stem unarmed; Leaves, alternate, sessile, 5.5 mm. × 2 mm. wide, firm, oblong, tip acuminate, margin white, entire, scabrous; Inflorescence of two kinds of flowers, radiate; Heads solitary; Receptacle, epaleate (single ring of paleae buried among the disk flowers); Phyllaries, in 3 ±defined series, graduated, outer < inner, inner bases white, tips herbaceous, margin scarious, veins 1, resin-filled unknown; Rays, blue, oblong, style present; Disk, corolla, yellow; Pappus of well-developed bristles, #>20, few short outer bristles, many long inner bristles, cylindric, short plumose.

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        images/TAS009660Oview.jpg

Partially dissected head of Coll. No. 966, Ionactis alpina

Scanned on 8 Feb 2014.

There is a ring of paleae amongst the disk flowers.

Coll. No. 966, 22 May 2013, characters observed: Perennial, tufted herb, to 8 cm.; Stem unarmed; Leaves, alternate, sessile, 5.5 mm. × 2 mm. wide, firm, oblong, tip acuminate, margin white, entire, scabrous; Inflorescence of two kinds of flowers, radiate; Heads solitary; Receptacle, epaleate (single ring of paleae buried among the disk flowers); Phyllaries, in 3 ±defined series, graduated, outer < inner, inner bases white, tips herbaceous, margin scarious, veins 1, resin-filled unknown; Rays, blue, oblong, style present; Disk, corolla, yellow; Pappus of well-developed bristles, #>20, few short outer bristles, many long inner bristles, cylindric, short plumose.

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        images/TAS009660Head.jpg

Iva axillaris

Coll. No. 895, Iva axillaris

Photographed 25 August 2012.

Article records that use this photograph:

        images/IMGQ1266sm.jpg

Coll. No. 895, Iva axillaris

Scanned 23 August 2013.

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        images/TAS008950Oview.jpg

Coll. No. 895, Iva axillaris

Scanned 23 August 2013.

The phyllaries of the flower head at lower left have been removed.

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        images/TAS008950Infl.jpg

Habitat of Iva axillaris near Coyote Spring.

Photographed 24 August 2012.

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        images/IMG30641sm.jpg

Lactuca ludoviciana

Lactuca ludoviciana (?)

Photographed 2 July 2022.

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        images/20220702_120446sm.jpg

Lactuca serriola

Coll. No. 1749, Lactuca serriola

Photographed 8 January 2018.

Article records that use this photograph:

        images/IMGQ4535sm.jpg

Lactuca tatarica pulchella

Coll. No. 2691, Lactuca tatarica var. pulchella.

Photographed 5 February 2022.

Plants of Colorado
Asteraceae

Lactuca tatarica (L.) C.A.Mey. var. pulchella (Pursh) Breitung.  Blue Lettuce.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9581°N, 106.0124°W. WGS 1984 Elev. 2863 m. Blue ligules, copious pappus of bristles, milky sap, lower cauline leaves runcinate and secund. Open hillside with ponderosa pines, collected nearby: Chaenactis douglasii, Erigeron subtrinervis, Gutierrezia sarothrae, and Hymenoxys richardsonii var. floribunda.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2691. 16-Aug-2021

Coll. No. 2691, 16 Aug 2021, characters observed: Perennial herb, 80-90 cm., supposedly rhizomatous but I never dug any out, glabrous; Leaves, cauline, alternate, sessile, blade 100-110 mm. × 20 mm. wide, runcinate to entire above; Inflorescence, heads, many, showy, >leaves; Involucre, 12 mm. × 3 mm. wide, lower << rest of involucre, thin (tear easily), green, flat, margin, scarious, tips, acute, purple, little tuft of hairs; Ray flowers, tube 1.7 mm. + blade 7.5 mm. × 1.3 mm. wide, tips, 5-lobed, blue, fertile; Pappus, many well-developed, fine bristles, 9 mm., a little off-white.

Article records that use this photograph:

        images/IMGQ5593sm.jpg

Lactuca virosa

Adaxial surface of cauline leaf, Coll. No. 1036, Lactuca virosa

Scanned 29 Dec 2014.

Coll. No. 1036, 31 August 2013, characters observed while keying: Herbaceous annual or biennial to 1.5 m.; Sap copious milky; Leaves cauline widely clasping; Head with only ray flowers (liguliflorus); Receptacle epaleate; Pappus of bristles, smooth; Corolla yellow; Fruit ±compressed, beaked, slender, 5 ribs per face, wing-margined.

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        images/TAS010360Lfad.jpg

Abaxial surface of cauline leaf, Coll. No. 1036, Lactuca virosa

Scanned 29 Dec 2014.

Coll. No. 1036, 31 August 2013, characters observed while keying: Herbaceous annual or biennial to 1.5 m.; Sap copious milky; Leaves cauline widely clasping; Head with only ray flowers (liguliflorus); Receptacle epaleate; Pappus of bristles, smooth; Corolla yellow; Fruit ±compressed, beaked, slender, 5 ribs per face, wing-margined.

        images/TAS010360Lfab.jpg

Laennecia schiedeana

Coll. No. 2242, Laennecia schiedeana

Photographed 15 Sep 2021.

Plants of Colorado
Asteraceae

Laennecia schiedeana (Lessing) G. L. Nesom.  Pineland Marshtail.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. 39.3325°N, 105.269°W. WGS 1984 Elev. 2506 m. Also collected here: Juniperus scopulorum, Chenopodium fremontii, Dieteria bigelovii, and Erigeron subtrinervis. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2242. 16-Sep-2019

Coll. No. 2242, 16 Sep 2019, characters observed: Annual, 75  cm., Stem, wispy arachnose, Leaves, cauline, sessile, auriculate, blade 26 mm. × 5 mm. wide, linear, serrate, denticles spinulose, stipitate glandular; Peduncles, 0-4 mm.; Involucre, 3.5 mm. × 7 mm. wide; Phyllaries, in 2 series, 4 mm. × 0.7 mm. wide, center green, margin scarious, margins flat, glandular; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, tube 3 mm. + lobes 1 mm., yellow, open, bisexual; Pappus, many, well-developed bristles, 3.5 mm., ±equal; Cypsela, 1.4 mm. × 0.5 mm. wide, purple, glandular at top.

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        images/IMGQ5416sm.jpg

Layia glandulosa

Partially dissected head of Coll. No. 274, Layia glandulosa

Scanned 25 Jan 2014.

Coll. No. 274, 24 Apr 2001, characters observed: Annual, tap-rooted, to 15 cm.; Stem, leaves, and phyllaries with round black stalked glands and white hairs; Inflorescence, some flowers of head have ligulate flowers, head composed of 2 kinds of flowers, head radiate; Phyllaries in 1 series, each subtending a ray flower, margins folded, enclosing a ray flower; Receptacle, paleate, flat; Ray flowers, #8, pale yellow; Disk flowers, #±20; Pappus awl-shaped and fine bristles; Fruit, mature ray compressed front to back, adaxial face covered by papery phyllary margins.

Article records that use this photograph:

        images/TAS002740Head.jpg

Coll. No. 274, Layia glandulosa

Scanned 25 Jan 2014.

Coll. No. 274, 24 Apr 2001, characters observed: Annual, tap-rooted, to 15 cm.; Stem, leaves, and phyllaries with round black stalked glands and white hairs; Inflorescence, some flowers of head have ligulate flowers, head composed of 2 kinds of flowers, head radiate; Phyllaries in 1 series, each subtending a ray flower, margins folded, enclosing a ray flower; Receptacle, paleate, flat; Ray flowers, #8, pale yellow; Disk flowers, #±20; Pappus awl-shaped and fine bristles; Fruit, mature ray compressed front to back, adaxial face covered by papery phyllary margins.

Article records that use this photograph:

        images/TAS002740Oview.jpg

Coll. No. 95, Layia glandulosa

Scanned 29 October 2013.

1. Ray flower and phyllary, adaxial view.
2. Ray flower, still inserted in phyllary, adaxial view.
3. Ray flower, still inserted in phyllary, abaxial view.
4. Disc flower, poorly developed.
5. Disc flower in front of palea, apparently attached at base.
6-7. Palea.
8-11. Disc flowers.

Article records that use this photograph:

        images/TAS000950FlPts.jpg

Coll. No. 95, Layia glandulosa

Scanned 28 October 2013.

Coll. No. 95, 29 April 1997, characters observed while keying: Annual, to 15 cm., tap-rooted; Stem erect, variously short straight hairy; Inflorescence, solitary heads, with strap-shaped corollas present, head composed of 2 kinds of flowers, ray flowers 8, disc flowers ≥25; Phyllaries, in 1 series, 5.5 mm., with black tack-shaped glands and few hairs of varying length, margins folded enclosing ray flowers; Receptacle, paleate with a single ring of paleae separating ray and disc flowers; Pappus, on disc flowers only, 10 awl-shaped scales; Fruit, mature ray fruit compressed front-to-back, adaxial face covered by phyllary margins.

Article records that use this photograph:

        images/TAS000950Oview.jpg

Layia platyglossa

Layia platyglossa

        images/3221-7.jpg

Coll. No. 302, Layia platyglossa

Scanned 31 October 2013

Article records that use this photograph:

        images/TAS003020Oview.jpg

Liatris punctata

Coll. No. 3195, Liatris punctata.

Photographed 30 January 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Liatris punctata Hook.  Dotted Blazing Star.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Small divide between two unnamed streams, southeast quadrant of Survey Field, 2.23 km. (geodesic) south of the GNIS location of Golden. 39.73546°N, 105.2205°W. WGS 1984 Elev. 1810 m. Highest Great Plains at Rocky Mountain Front Range scarp, more or less disturbed mixed grass, where some quarrying has occurred, also collected here: Cleomella serrulata, Salsola tragus and Eriocoma hymenoides.

Collected by permit: Colorado School of Mines, Edgar Mine 2022, issued: May 31, 2022, to: Tom Schweich.

Tom Schweich 3195. 27-Aug-2023

Article records that use this photograph:

        images/IMGQ6085sm.jpg

Coll. No. 1264, Liatris punctata

Scanned 5 January 2015.

Coll. No. 1264, 29 Jul 2015, characters observed: Perennial herb, to 32 cm.; Leaves, cauline, alternate, 78 mm. × 3.5 mm. wide, gradually reduced above, linear, glandular punctate, margins, entire, revolute, sparsely hairy; Inflorescence, single heads in axils on short pedicels; Involucre, 16 mm. × 7 mm. wide, ±cylindrical; Phyllaries, in 2+ series, inbricate, 14 mm. × 3.8 mm. wide, glandular-punctate abaxially distally, margin, ciliate, scarious, tip acute; Receptacle, epaleate; Flowers, one kind; Disk flowers; Corolla, tube white 8 mm. + lobes purple 2.5 mm.; Pappus, bristles, one series, 10 mm., plumose; Cypsela, 7 mm., hairy.

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        images/TAS012640Oview.jpg

Coll. No. 1736, Liatris punctata

Photographed 7 January 2018.

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        images/IMGQ4530sm.jpg

Liatris punctata in fruit at Red Rocks

Photographed 7 October 2015.

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        images/IMGQ1744sm.jpg

Inflorescence of Coll. No. 1264, Liatris punctata

Scanned 5 January 2015.

Coll. No. 1264, 29 Jul 2015, characters observed: Perennial herb, to 32 cm.; Leaves, cauline, alternate, 78 mm. × 3.5 mm. wide, gradually reduced above, linear, glandular punctate, margins, entire, revolute, sparsely hairy; Inflorescence, single heads in axils on short pedicels; Involucre, 16 mm. × 7 mm. wide, ±cylindrical; Phyllaries, in 2+ series, inbricate, 14 mm. × 3.8 mm. wide, glandular-punctate abaxially distally, margin, ciliate, scarious, tip acute; Receptacle, epaleate; Flowers, one kind; Disk flowers; Corolla, tube white 8 mm. + lobes purple 2.5 mm.; Pappus, bristles, one series, 10 mm., plumose; Cypsela, 7 mm., hairy.

Article records that use this photograph:

        images/TAS012640Infl.jpg

Madia glomerata

Coll. No. 902, Madia glomerata

Photographed 25 August 2012.

Article records that use this photograph:

        images/IMGQ1281sm.jpg

Coll. No. 894, Madia glomerata

Scanned 22 August 2013.

Coll. No. 894, 24 August 2012, characters observed while keying: Annual herb to 25 cm; Stem, proximal soft-hairy or peeling, distal hairy and glandular, full glands yellow; Leaves, alternate, tips not spiny; Inflorescence, heads not showy, involucre narrowly ellipsoid; Phyllaries, margins folded, enclosing ovaries; Flowers ±4, 2 kinds, rays ±1, disc ±3, mature ray flower pie-shaped in x-section; Pappus 0; Fruit, 5 mm x 1 mm wide, dull black, beakless

Article records that use this photograph:

        images/TAS008940Oview.jpg

Coll. No. 894, Madia glomerata

Scanned 22 August 2013.

Coll. No. 894, 24 August 2012, characters observed while keying: Annual herb to 25 cm; Stem, proximal soft-hairy or peeling, distal hairy and glandular, full glands yellow; Leaves, alternate, tips not spiny; Inflorescence, heads not showy, involucre narrowly ellipsoid; Phyllaries, margins folded, enclosing ovaries; Flowers ±4, 2 kinds, rays ±1, disc ±3, mature ray flower pie-shaped in x-section; Pappus 0; Fruit, 5 mm x 1 mm wide, dull black, beakless.

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        images/TAS008940Infl.jpg

Location of Coll. No. 894, Madia glomerata

Photographed 24 August 2012.

View is looking north and downhill.

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        images/IMG30638sm.jpg

Location of Coll. No. 902, Madia glomerata

Photographed 25 August 2012.

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        images/IMG30645sm.jpg

Coll. No. 902, Madia glomerata

Scanned 31 August 2013.

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        images/TAS009020Seed.jpg

Coll. No. 902, Madia glomerata

Photographed 25 August 2012.

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        images/IMGQ1277sm.jpg

Coll. No. 902, Madia glomerata

Photographed 25 August 2012.

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        images/IMGQ1283sm.jpg

Coll. No. 902, Madia glomerata

Scanned 30 August 2013.

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        images/TAS009020Infl.jpg

Coll. No. 902, Madia glomerata

Scanned 30 August 2013.

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        images/TAS009020Oview.jpg

Location of Coll. No. 902, Madia glomerata

Photographed 25 August 2012.

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        images/IMG30644sm.jpg

Madia glomerata near Reversed Creek.

Location records that use this photograph:

Article records that use this photograph:

  • A Checklist Flora of the Mono Lake Basin, Mono County, California and Mineral County, Nevada.: Reversed Creek.

        images/MLF_V1_Slide_33.jpg

Madia gracilis

Coll. No. 1194, Madia gracilis

Scanned 7 July 2015.

Coll. No. 1194, 26 Jun 2015, characters observed: Annual, to 6 cm.; Stems, red-brown, more hairy proximally, stalked black glandular distally; Leaves, cauline, opposite, 5 mm. × 1.3 mm. wide, hairy, light-colored glandular, margin entire, tip rounded; Inflorescence, not showy, open, heads borne singularly; Peduncles, to 4 mm.; Phyllaries, completely enclosing flowers, persistent, glands stalked, black; Ray flowers, 0-3, fruit, 2 mm. × 0.8 mm., not compressed side-to-side, maybe 3-angled, black; Disc flowers ≤5, bisexual, corolla 1.7 mm., yellow; Anthers light brown.

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        images/TAS011940Oview.jpg

Madieae

Tarweed Class with Bruce Baldwin and John Strother, August 18-19, 2012

Photographed 18 August 2012.

Article records that use this photograph:

        images/20120818Tarweedsm.jpg

Malacothrix californica

Coll. No. 3.3, Malacothrix californica

Scanned 15 October 2013.

Article records that use this photograph:

        images/TAS000033Oview.jpg

Nothocalais cuspidata

Nothocalai cuspidata “Prairie False Dandelion” on Schweich Hill.

Photographed 27 April 2023.

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Article records that use this photograph:

        images/20230427_103614sm.jpg

Coll. No. 1791, Nothocalais cuspidata

Scanned 8 July 2018.

Article records that use this photograph:

        images/TAS017910Oview.jpg

Nothocalais cuspidata on the Nightbird Gulch Trail

Photographed 3 May 2015.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Nothocalais cuspidata.
  • Nightbird Gulch Trail, Mount Galbraith Park, Jefferson County, Colorado: on east face.
  • Field Notes: Sunday, May 3rd.

        images/IMGQ0387sm.jpg

Onopordum acanthium

Coll. No. 2772, Onopordum acanthium

Scanned 4 June 2022.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Onopordum acanthium L.  Scotch Cottonthistle.
     (Determination tentative.)

Delong Park, Jefferson County, Colorado. New city park (construction in 2021 and 2022) near the intersection of 23rd Street and Vernon Drive, 1.75 km. southeast of the GNIS location of Golden. Basal rosette, new growth densely tomentose.

Collected by permit: City of Golden, 2022, issued: Mar 17, 2022, to: Tom Schweich.

Tom Schweich, with Carol Cameron & David Chavez 2772. 6-May-2022

Article records that use this photograph:

        images/TAS027720_240dpi.jpg

Oreochrysum parryi

Coll. No. 2717, Oreochrysum parryi.

Photographed 13 February 2022.

Plants of Colorado
Asteraceae

Oreochrysum parryi (A. Gray) Rydb.  Goldenrod.

Brumley, Lake County, Colorado. Subalpine forest on a bank between the access road to the Sno-Tel station and the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. 39.0876°N, 106.5422°W. WGS 1984 Elev. 3237 m. Gray-ish leaves, larger involucre and rays. One of three “goldenrods” growing together, the others are Solidago multiradiata and S. simplex. Brumley was a stage stop on the route across Independence Pass.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2717. 18-Aug-2021

Article records that use this photograph:

        images/IMGQ5605sm.jpg

Packera

Bob Legier photographs the Packera, perhaps P. werneriifolia.

Photographed 23 May 2021.

Article records that use this photograph:

        images/20210523_123120sm.jpg

Packera crocata

Inflorescence of Coll. No. 1997, Packera crocata

Scanned 22 January 2019.

Coll. No. 1997, 24 July 2018, characters observed: Perennial herb, 30 mm., caudex, relatively long and stout; Stem, glabrous; Leaves, basal and cauline, basal, petiole, 60 mm., blade, 37 mm. × 16 mm. wide, oblong, entire, glabrous, tip, round, cauline, 20 mm. × 13 mm. wide, sessile, lanceolate, pinnately lobed, occasional bits of tomentum but definitely not tomentose; Inflorescence, heads #6 per stem, showy, >leaves, Involucre, 5 mm. × 11 mm. wide, spheric; Phyllaries, 1 equal series, 4 mm. × 1.2 mm. wide, green to purplish red, glabrous, margins, flat, tip, acute, short hairy; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #12-14, tube 3 mm. + blade 7.4 mm. × 1.2 mm. wide, orange-red, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., throat expanding gradually, orange; Pappus, many, well-developed, capillary bristles, 4 mm., ±equal; Cypsela, 1.4 mm. × 0.7 mm. wide, compressed front to back, green, glabrous.

Article records that use this photograph:

        images/TAS019970Infl.jpg

Coll. No. 1997, Packera crocata

Photographed 22 January 2019.

Coll. No. 1997, 24 July 2018, characters observed: Perennial herb, 30 mm., caudex, relatively long and stout; Stem, glabrous; Leaves, basal and cauline, basal, petiole, 60 mm., blade, 37 mm. × 16 mm. wide, oblong, entire, glabrous, tip, round, cauline, 20 mm. × 13 mm. wide, sessile, lanceolate, pinnately lobed, occasional bits of tomentum but definitely not tomentose; Inflorescence, heads #6 per stem, showy, >leaves, Involucre, 5 mm. × 11 mm. wide, spheric; Phyllaries, 1 equal series, 4 mm. × 1.2 mm. wide, green to purplish red, glabrous, margins, flat, tip, acute, short hairy; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #12-14, tube 3 mm. + blade 7.4 mm. × 1.2 mm. wide, orange-red, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., throat expanding gradually, orange; Pappus, many, well-developed, capillary bristles, 4 mm., ±equal; Cypsela, 1.4 mm. × 0.7 mm. wide, compressed front to back, green, glabrous.

Article records that use this photograph:

        images/IMGQ4843sm.jpg

Coll. No. 3107, Packera crocata.

Photographed 10 January 2024.

Plants of Colorado
Asteraceae

Packera crocata (Rydb.) W. A. Weber & A. Love.  Saffron Ragwort.

(Syn: Packera dimorphophylla (Greene) W.A. Weber & Á. Löve)

West Tennessee Creek, Lake County, Colorado. In a meadow just north of West Tennessee Creek, 580 m. southwest of Lily Lake, 12.6 km. northwest of the GNIS location of Leadville. 39.3466°N, 106.3723°W. WGS 1984 Elev. 3210 m. Basal leaves mostly withered, bases chordate to cuneate. Also collected here: Caltha chionophila.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3107. 18-Jul-2023

Article records that use this photograph:

        images/IMGQ6040sm.jpg

Coll. No. 1997, Packera crocata

Photographed 24 July 2018.

Coll. No. 1997, 24 July 2018, characters observed: Perennial herb, 30 mm., caudex, relatively long and stout; Stem, glabrous; Leaves, basal and cauline, basal, petiole, 60 mm., blade, 37 mm. × 16 mm. wide, oblong, entire, glabrous, tip, round, cauline, 20 mm. × 13 mm. wide, sessile, lanceolate, pinnately lobed, occasional bits of tomentum but definitely not tomentose; Inflorescence, heads #6 per stem, showy, >leaves, Involucre, 5 mm. × 11 mm. wide, spheric; Phyllaries, 1 equal series, 4 mm. × 1.2 mm. wide, green to purplish red, glabrous, margins, flat, tip, acute, short hairy; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #12-14, tube 3 mm. + blade 7.4 mm. × 1.2 mm. wide, orange-red, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., throat expanding gradually, orange; Pappus, many, well-developed, capillary bristles, 4 mm., ±equal; Cypsela, 1.4 mm. × 0.7 mm. wide, compressed front to back, green, glabrous.

Article records that use this photograph:

        images/20180724_104815sm.jpg

Packera fendleri

Coll. No. 2044, Packera plattensis fendleri

Photographed 15 September 2019.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Packera plattensis (Nuttall) W. A. Weber & Á. Löve.  Prairie Groundsel.

Deadman Gulch, Jefferson County, Colorado. Above the watercourse locally named “Kinney Run,” between US Highway 6 and Eagle Ridge Drive, 110 m. northwest of Kinney Run Trail, 3.17 km. south of the GNIS location of Golden. 39.7339°N, 105.2169°W. WGS 1984 Elev. 1817 m. Northeast-facing slope, more open stoney ground, on what appears to be a southeast to northwest trend approximating the trend of Eagle Ridge to the southeast.

Collected by permit: City of Golden, 2019, issued: Jan 29, 2019, to: Tom Schweich.

Tom Schweich 2044. 2-Jun-2019

Article records that use this photograph:

        images/IMGQ5040sm.jpg

Packera plattensis fendleri

Photographed 25 May 2019.

This is probably the same plant as Coll. No. 1817.

Article records that use this photograph:

        images/20190525_094839sm.jpg

Coll. No. 1902, Packera plattensis fendleri

Scanned 25 November 2018.

Article records that use this photograph:

        images/IMGQ4792sm.jpg

Coll. No. 3162, Packera fendleri.

Photographed 21 January 2024.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Packera fendleri (A. Gray) W.A. Weber & Á. Löve.  Fendler’s Ragwort.

Guy Gulch, Jefferson County, Colorado. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 63 m. southeast of the line shack, 1.05 km. west southwest of Mt. Tom, 13.65 km. (geodesic) northwest of the GNIS location of Golden. 39.81292°N, 105.36285°W. WGS 1984 Elev. 2621 m. On an old road through forest of aspen, spruce and ponderosa pine, with Sedum lanceolatum, Oxytropis lambertii, Penstemon glaber var. alpinus, and Koeleria macrantha.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3162. 26-Jul-2023

Article records that use this photograph:

        images/IMGQ6076sm.jpg

A small Packera plattensis fendleri in a rocky habitat.

Photographed 8 Jun 2018 in a basalt quarry on top of North Table Mountain.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Packera fendleri.

        images/IMG50259a.jpg

Coll. No. 2861, Packera fendleri.

Photographed 22 November 2022.

Plants of Colorado
Asteraceae

Packera fendleri (A. Gray) W.A. Weber & Á. Löve.  Fendler’s Ragwort.

Salt Creek, Park County, Colorado. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.85 km. northwest of Antero Junction, 22.3 km. northeast of Buena Vista. 38.9607°N, 106.0031°W. WGS 1984 Elev. 2829 m. Sparse vegetation on a sheetflow slope below a small hill with junipers and pines. Also collected here: Penstemon teucrioides and Bromus porteri.

Collected by permit: Pike - San Isabel National Forest, 2022, issued: Mar 29, 2022, to: Tom Schweich.

Tom Schweich 2861. 18-Jul-2022

Article records that use this photograph:

        images/IMGQ5744sm.jpg

[Coll. No. 1817] Packera plattensis fendleri leaves just beginning to grow in mid-April.

Photographed 16 April 2019.

Article records that use this photograph:

        images/IMGQ4932sm.jpg

Coll. No. 2798, Packera fendleri

Photographed 13 August 2022.

Plants of Colorado
Asteraceae

Packera fendleri (A. Gray) W.A. Weber & Á. Löve.  Fendler’s Ragwort.

Edgar Mine, Clear Creek County, Colorado. 116 m. east southeast of the mine portal, 1.39 km. west northwest of the GNIS location of Idaho Springs. 39.7474°N, 105.5244°W. WGS 1984 Elev. 2422 m. South-facing, open rocky slope, with Juniperus scoparia and Cercocarpus montanus. Collected while collecting approximate topotypes of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987).

Collected by permit: Colorado School of Mines, Edgar Mine 2022, issued: May 31, 2022, to: Tom Schweich.

Tom Schweich 2798. 13-Jun-2022

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Packera fendleri on the ridge between Magpie and Nightbird gulches.

Photographed 22 May 2023.

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Packera plattensis fendleri in the quarry on top of North Table Mountain

Photographed 8 June 2018.

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Coll. No. 1817, Packera plattensis fendleri

Scanned 12 May 2018.

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Packera multilobata

Coll. No. 175, Packera multilobata

Scanned 24 Jan 2014.

Annual, tap-rooted, 15-30 cm.; Stem, tomentose in leaf axils and at base of heads; Leaves, basal and cauline, alternate, to 25 mm., basal pinnately lobed, tomentose at base, persistent; Peduncle, 10-18 mm., bracted; Inflorescence, some flowers with strap-shaped corollas, head composed of 2 kinds of flowers, radiate, heads (6)8-10; Phyllaries, in 1 overlapping series (or 2 widely spaced series), #18-21, ±equal, free at base, not enfolding ray flowers, some margins slightly scarious, tip acute, green, minutely wooly, without prominent tack-shaped gland; Receptacle, epaleate, flat; Pappus, of well-developed bristles on ray and disc flowers, thin, short plumose, dehiscing readily; Ray flowers yellow, blade 6.5-9.0 mm. (Described from Coll. No. 104, 29 April 1997, and Coll. No. 175, 29 May 1999).

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Leaves of Coll. No. 175, Packera multilobata

Scanned 25 Jan 2014.

Annual, tap-rooted, 15-30 cm.; Stem, tomentose in leaf axils and at base of heads; Leaves, basal and cauline, alternate, to 25 mm., basal pinnately lobed, tomentose at base, persistent; Peduncle, 10-18 mm., bracted; Inflorescence, some flowers with strap-shaped corollas, head composed of 2 kinds of flowers, radiate, heads (6)8-10; Phyllaries, in 1 overlapping series (or 2 widely spaced series), #18-21, ±equal, free at base, not enfolding ray flowers, some margins slightly scarious, tip acute, green, minutely wooly, without prominent tack-shaped gland; Receptacle, epaleate, flat; Pappus, of well-developed bristles on ray and disc flowers, thin, short plumose, dehiscing readily; Ray flowers yellow, blade 6.5-9.0 mm. (Described from Coll. No. 104, 29 April 1997, and Coll. No. 175, 29 May 1999).

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Coll. No. 104, Packera multilobata

Scanned 5 November 2013.

Coll. No. 104, 29 April 1997, characters observed while keying: Annual, tap-rooted, 20-30 cm.; Stem, tomentose in leaf axils and at base of heads; Leaves, basal and cauline, alternate, basal pinnately lobed, tomentose at base, persistent; Inflorescence, some flowers with strap-shaped corollas, head composed of 2 kinds of flowers, radiate, heads 8-10; Phyllaries, in 1 series, #≥18, ±equal, free at base, not enfolding ray flowers, some margins slightly scarious, tip acute, green, minutely wooly; Receptacle, epaleate, flat; Pappus, of well-developed bristles on ray and disc flowers, thin, short plumose, dehiscing readily; Ray flowers yellow, blade 6.5 mm.

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Packera plattensis

Coll. No. 2085, Packera plattensis

Photographed 15 October 2019.

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Stout and erect caudex of Coll. No. 2064, Packera plattensis.

Scanned 6 October 2019.

Somehwere between 1/3 and 1/2 of specimens have this stout and erect caudex. I assume these are the older plants, and the shape of this caudex develops over time.

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Inconspicuous calyculi in the head of Coll. No. 2064, Packera plattensis

Scanned 6 October 2019.

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Coll. No. 1914, Packera plattensis

Photographed 3 December 2018.

Ranson/Edwards Homestead Open Space. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Roaf from CO Highway 93, 1 mi. generally north on Plainview Road, then 60 m. east into field. (39.8872,-105.2607,WGS 1984) Drier southeast-facing slope. 6/3/2018

Coll. No. 1914, 3 June 2018, characters observed: Perennial, herb, to 40 cm., caudex, 12 mm., elongated rather than button-like; Stem, tomentose, thinning above but never glabrous; Leaves, basal and cauline, (largest) basal leaf, petiole 30 mm., blade 57 mm. × 19-20 mm. wide, some pinnatisect, with 2 pair of lobes, most basal leaves orbicular or oblong, margin crenate, sometimes doubly, petiole and mid-vein tomentose, highly variable, eglandular, cauline leaves reduced above into the inflorescence; Inflorescence, heads, ±30 per stem; Involucre, 5 mm. × 7.5 mm. wide, spheric; Phyllaries, in 1 series, 5.5 mm. × 1 mm. wide, green and chartaceous, thinly tomentose, margins, flat, scarious, tips, acuminate, green, with tufts of hair; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #13, tube 3 mm. + blade 6.5 mm. × 2.5 mm. wide, tips deeply cleft, to 1.5 mm., yellow, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow; Pappus, many, well-developed, bristles, 4-5 mm., ±equal; Fruit (cypsela), 2 mm. × 0.5 mm. wide, beak-less, brown, ribbed, pubescent on ribs.

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Sub-lyrate(?) leaf of Coll. No. 1914, Packera plattensis

Scanned 3 December 2018,

Ranson/Edwards Homestead Open Space. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Roaf from CO Highway 93, 1 mi. generally north on Plainview Road, then 60 m. east into field. (39.8872,-105.2607,WGS 1984) Drier southeast-facing slope. 6/3/2018

Coll. No. 1914, 3 June 2018, characters observed: Perennial, herb, to 40 cm., caudex, 12 mm., elongated rather than button-like; Stem, tomentose, thinning above but never glabrous; Leaves, basal and cauline, (largest) basal leaf, petiole 30 mm., blade 57 mm. × 19-20 mm. wide, some pinnatisect, with 2 pair of lobes, most basal leaves orbicular or oblong, margin crenate, sometimes doubly, petiole and mid-vein tomentose, highly variable, eglandular, cauline leaves reduced above into the inflorescence; Inflorescence, heads, ±30 per stem; Involucre, 5 mm. × 7.5 mm. wide, spheric; Phyllaries, in 1 series, 5.5 mm. × 1 mm. wide, green and chartaceous, thinly tomentose, margins, flat, scarious, tips, acuminate, green, with tufts of hair; Receptacle, epaleate; Flowers, 2 kinds; Ray flowers, #13, tube 3 mm. + blade 6.5 mm. × 2.5 mm. wide, tips deeply cleft, to 1.5 mm., yellow, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow; Pappus, many, well-developed, bristles, 4-5 mm., ±equal; Fruit (cypsela), 2 mm. × 0.5 mm. wide, beak-less, brown, ribbed, pubescent on ribs.

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Packera tridenticulata

Coll. No. 1643, Packera tridenticulata

Scanned 7 December 2017.

Coll. No. 1643, 30 May 2017, characters observed: Perennial, to 25 cm., densely tomentose below, thinning above; Leaves, mostly basal, petiole 40 mm. + blade 24 mm. × 7 mm. wide, sparsely shallowly toothed, few cauline, tomentose in the axils, petiole 20 mm. + blade 24 mm. × 4 mm. wide, sparsely shallowly toothed, a few are 3-lobed at tip; Inflorescence, corymbiform, heads #12±, flowers of 2 kinds; Involucre, 6 mm. × 11 mm. wide, bowl-shaped; Phyllaries, 1 series (with little overlap), 4 mm. × 1.2 mm. wide, mostly green, 2+ veins, 1 margin chartaceous; Receptacle, epaleate; Rays, #11±, fertile, tube 2.5 mm. + blade 5.5 mm. × 2 mm. wide, yellow; Disc flowers, yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 2.5 mm., glabrous.

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Inflorescence of Coll. No. 1643, Packera tridenticulata

Scanned 7 December 2017.

Coll. No. 1643, 30 May 2017, characters observed: Perennial, to 25 cm., densely tomentose below, thinning above; Leaves, mostly basal, petiole 40 mm. + blade 24 mm. × 7 mm. wide, sparsely shallowly toothed, few cauline, tomentose in the axils, petiole 20 mm. + blade 24 mm. × 4 mm. wide, sparsely shallowly toothed, a few are 3-lobed at tip; Inflorescence, corymbiform, heads #12±, flowers of 2 kinds; Involucre, 6 mm. × 11 mm. wide, bowl-shaped; Phyllaries, 1 series (with little overlap), 4 mm. × 1.2 mm. wide, mostly green, 2+ veins, 1 margin chartaceous; Receptacle, epaleate; Rays, #11±, fertile, tube 2.5 mm. + blade 5.5 mm. × 2 mm. wide, yellow; Disc flowers, yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 2.5 mm., glabrous.

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Packera werneriifolia

Coll. No. 3040, Packera werneriifolia.

Photographed 20 December 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Packera werneriifolia (A. Gray) W. A. Weber & Á. Löve.  Hoary Groundsel.

Guy Gulch, Jefferson County, Colorado. Open shade on a forested hillside above Guy Gulch, 290 m. southwest of County Road 70, 1.15 km. (geodesic) northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. 39.799°N, 105.3663°W. WGS 1984 Elev. 2488 m. Gentle north-facing slope in Douglas fir forest with little to no middlestory.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich 3040. 3-Jul-2023

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Coll. No. 2467, Packera werneriifolia

Scanned 31 May 2021.

Plants of Colorado
Asteraceae

Packera werneriifolia (A. Gray) W. A. Weber & Á. Löve.  Hoary Groundsel.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1731°N, 105.3812°W. WGS 1984 Elev. 2523 m. Downed ponderosa pines, with Erigeron vetensis, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich, with Bob Legier and Matt Schweich 2467. 23-May-2021

Coll. No. 2467, 23 May 2021, characters observed: Perennial herb, 9-10 cm., tap-rooted; Stem, green, lanate-tomentose throughout; Leaves, cauline, appearing basal, blade, narrowly oblanceolate, 70 mm. × 4 mm. wide, abruptly reduced, giving plant scapose appearance, abaxial, glabrate, adaxial, thinly tomentose, margins, entire, revolute; Inflorescence, flat-topped, heads, #7-10 per stem, not overtopped by leaves; Peduncles, 3-22 mm., tomentose; Involucre, 8 mm. × 8 mm. wide, ovoid, tomentose; Phyllaries, in 2 series, non-imbricate and appearing to be a single series, 6.5 mm. × 1 mm. wide, flat, not clasping ray ovaries, tip, acute, margins of inner phyllaries scarious, calyculi present, green; Flowers, 2 kinds; Ray flowers, #9, tube 3 mm. + blade 4.5 mm. × 2 mm. wide, yellow, fertile; Disk flowers, #40-50, tube 4 mm. + lobes 0.5 mm., yellow, throat expanding gradually; Pappus, many well-developed bristles, 5 mm., ±unequal; Cypsela, immature, 1.5 mm. × 0.5 mm. wide, green, glabrous, beakless.

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Pericome caudata

Coll. No. 2212, Pericome caudata

Scanned 14 February 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Pericome caudata A. Gray.  Mountain Tail-Leaf.

Lippincott Property, Jefferson County, Colorado. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. 39.908°N, 105.2764°W. WGS 1984 Elev. 1960 m. Shrub, to 1 meter.

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2212. 29-Aug-2019

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Coll. No. 2216, Pericome caudata

Photographed 29 August 2019.

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Psathyrotes annua

Collection No. 525, Psathyrotes annua

Scanned 20 March 2011. Background grid is 10 x 10 to the inch.

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Pseudognaphalium canescens

Coll. No. 1549, Pseudognaphalium canescens

Photographed 1 Sep 2016.

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Coll. No. 1549, Pseudognaphalium canescens

Scanned 22 January 2017.

North Table Mountain Park, Jefferson County, Colorado. South rim of North Table Mountain, in the Golden Cliffs Trail where it passes through the uppermost basalt flow, 260 m. north of the Golden Cliffs trailhead, 1.5 km. north northeast of the GNIS location of Golden. 39.7686°N, 105.2151°W. WGS 1984 Elev. 1951 m. Growing in cracks in the basalt of the upper flow, very few seen.

Coll. No. 1549, 1 Sep 2016, characters observed: Perennial, to 25 cm.; Leaves, alternate, petiole 16 mm. + blade 30 mm. × 10 mm. wide, tomentose (slightly less so adaxially), sessile glandular beneath the tomentum; Inflorescence, terminal and axial on leafy stems; Phyllaries, 3 series, 3.7 mm. × 1 mm. wide, green center, mostly scarious, innermost glabrous; Receptacle, epaleate, flat; Flowers, 2 kinds (heads disciform); Rays, small, inconspicuous, sterile; Disk flowers, corolla, 2 mm., yellow; Pappus, capillary bristles, >corollas.

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Pseudognaphalium luteoalbum

Coll. No, 322, Pseudognaphalium luteoalbum

Scanned 26 October 2013.

Coll. No. 322, 22 March 2003, characters observed while keying: Annual, to 25 cm., tap-rooted; Stem, branched at base, ascending, tomentose, without embedded translucent oil glands; Leaves, alternate, sessile to ±clasping, to 35 mm., not spiny, entire, leaves just below cluster of flowers shorter than cluster; Inflorescence, without strap-shaped corollas, flowers of 1 kind; Heads, many per flower stem; Involucre 3 mm.; Phyllaries in 2+ series, unequal in size and appearance, outermost transparent, inner have some green near base, not spiny; Receptacle epaleate; Pappus of fine bristles, 8-12+, shed in rings; Corollas, white to pink, radial (not bilateral).

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Pseudognaphalium macounii

Coll. No. 1257, Pseudognaphalium macounii

Scanned 25 December 2015.

Coll. No. 1257, 26 Jul 2015, characters observed: Annual (?) to 45 cm.; Leaves, cauline, alternate, 40 mm. × 4 mm. wide, decurrent, lance-linear, entire, stalked glandular, tomentose abaxially; Inflorescence, branched axial and terminal; Heads in tight clusters, disciform; Involucre, 4 mm.; Receptacle, epaleate; Phyllaries in 4+ series, hyaline; Pappus, bristles.

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Psilostrophe cooperi

Cooper's Paper Daisy on Pinto Mountain.

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Cooper's Paper Daisy on Pinto Mountain.

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Pyrrocoma racemosa paniculata

Coll. No. 710, Pyrrocoma racemosa var. paniculata

Scanned 17 Nov 2011.

Coll. No. 710, 17 Nov 2011, characters observed while keying: Perennial herb to 35 cm; Stem curved ascending, sparsely tomentose; Leaves alternate, reduced above, narrowly oblanceolate, either sessile or with winged petiole, small-serrate, glabrous; Heads 3, 15-20 mm across, racemose (not flat-topped clusters), not gummy/sticky; Pedicels 4-5 cm; Phyllaries in > 2 series, to 7 mm, white margined below, green tip 2 mm x 1 mm wide; Receptacle naked; Flowers both ray and disc, yellow; Achenes silky pubescent, with a pappus of bristles of uniform length (one series).

Article records that use this photograph:

  • Inyo National Forest Road 01S04A, Mono County, California: 10300.
  • Field Notes: Col. #710.

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Coll. No. 710, Pyrrocoma racemosa var. paniculata

Scanned 17 Nov 2011.

The head at lower left has been dissected to aid indetification.

Coll. No. 710, 17 Nov 2011, characters observed while keying: Perennial herb to 35 cm; Stem curved ascending, sparsely tomentose; Leaves alternate, reduced above, narrowly oblanceolate, either sessile or with winged petiole, small-serrate, glabrous; Heads 3, 15-20 mm across, racemose (not flat-topped clusters), not gummy/sticky; Pedicels 4-5 cm; Phyllaries in > 2 series, to 7 mm, white margined below, green tip 2 mm x 1 mm wide; Receptacle naked; Flowers both ray and disc, yellow; Achenes silky pubescent, with a pappus of bristles of uniform length (one series).

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Rafinesquia neomexicana

Rafinesquia neomexicana near the Mesquite Mountains

My collection #331. Photograph taken April 20, 2004.

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Coll. No. 331, Rafinesquia neomexicana

Scanned 22 October 2012.

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Coll. No. 331, Rafinesquia neomexicana

Scanned 22 October 2012.

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Ratibida columnifera

Coll. No. 1198, Ratibida columnifera

Photographed 12 July 2015.

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Coll. No. 1496, Ratibida columnifera

Photographed 5 January 2017.

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Rudbeckia hirta pulcherrima

Coll. No. 2635, Rudbeckia hirta var. pulcherrima

Photographed 22 January 2022.

Plants of Colorado
Asteraceae

Rudbeckia hirta L. var. pulcherrima Farw.  Black-Eyed Susan.

Morrison Creek, Jefferson County, Colorado. Along Morrison Creek and former National Forest Road 547, 2.78 km. south of National Forest Road 550, 63.4 km. south of the GNIS location of Golden. 39.3192°N, 105.2832°W. WGS 1984 Elev. 2459 m. Hispid, lvs entire, receptacle paleate, rays yellow, disk fls purple, pappus 0. Shaded area, in a generally more open forest, with an adjacent meadow. Also collected here: Galium boreale, and Thalictrum fendleri.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2635. 5-Aug-2021

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Rudbeckia laciniata ampla

Coll. No. 2650, Rudbeckia laciniata var. ampla.

Photographed 27 January 2022.

Plants of Colorado
Asteraceae

Rudbeckia laciniata L. var. ampla (A. Nelson) Cronquist.  Cut-Leaf Coneflower..

Morrison Creek, Jefferson County, Colorado. Buffalo Creek Recreation Area, along Morrison Creek and former National Forest Road 547, 0.88 km. south of National Forest Road 550, 61.5 km. south of the GNIS location of Golden. 39.3323°N, 105.2852°W. WGS 1984 Elev. 2395 m. In shade on banks of creek; also collected nearby: Thalictrum fendleri, Lupinus argenteus, Antennaria rosea, and Arnica cordifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2650. 5-Aug-2021

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Sanvitalia abertii

Coll. No. 145, Sanvitalia abertii

Scanned 23 Jan 2014.

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Coll. No. 145, Sanvitalia abertii

Scanned 23 Jan 2014.

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Flower parts of Coll. No. 145, Sanvitalia abertii

Scanned 23 Jan 2014.

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Scorzonera laciniata

Schweich collection of Scorzonera laciniata

©reserved Denver Botanic Gardens URL: http://swbiodiversity.org/seinet/collections/individual/index.php?occid=13288130&clid=0 Accessed 5 May 2020. Usage Rights: CC0 1.0 (Public-domain).

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Scorzonera laciniata.

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Senecio hydrophilus

Habitat of Coll. Nos. 906 and 907, Senecio hydrophilus Nutt.

Photographed 26 August 2012.

Collection No. 906 was a mixed collection of Veronica anagallis-aquatica L. and V. serpyllifolia L. ssp. humifusa (Dickson) Syme.

Collection No. 907 was Senecio hydrophilus Nutt.

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Senecio integerrimus

Coll. No. 1897, Senecio integerrimus in Colorado School of Mines Survey Field.

Photographed 22 November 2018.

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Button-like caudex of Coll. No. 1811, Senecio integerrimus

Scanned 8 October 2018.

Coll. No. 1811, 10 May 2018, characters observed: Perennial, herb, to 40 cm., sap clear, caudex button-like; Stem, multicellular arachnose throughout; Leaves, basal and cauline, alternate, basal, petiole, 70 mm., blade, 75 mm. × 12 mm. wide, sparsely arachnose, margin wavy and revolute in places, reduced above, cauline, sessile, blade 85 mm. × 10 mm. wide, reduced above, margin wavy and revolute in part; Inflorescence, corymbiform, heads #8-10 per stem, somewhat convex, >leaves; Pedicels, 5-20 mm., subtended by a bract to 6 mm., lanceolate; Involucre, 7 mm. × 10 mm wide, bowl-shaped, ±glabrous; Phyllaries, ±equal, in 1 series, 7 mm. × 1.8 mm. wide, green, eglandular, margins ±flat, not clasping ray ovaries, tips acuminate with terminal tuft of hairs; Receptacle, epaleate; Ray flowers, #8-10, tube 4 mm. + blade 5 mm. × 2.5 mm. wide, yellow, fertile; Disk flowers, many, tube 4.5 mm. + lobes 1 mm., yellow; Pappus, many, well-developed, bristles, ±equal; Cypsela, 1.3 mm., brown.

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Senecio integerrimus “Columbia Ragwort” in the North Washington Open Space.

Photographed 12 May 2020.

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Coll. No. 972, Senecio integerrimus var. exaltatus

Scanned on 11 Feb 2014.

Coll. No. 972, 22 May 2013, characters observed: Perennial herb, to 35 cm.; Leaves of varying shapes, largest proximal, petiole to 7 cm., some slightly winged, + blade to 8 cm. × 2.8 cm. wide, elliptical, margin slightly toothed or scalloped, distal, 5 cm., lance-linear, sessile; Inflorescence, flowers of 2 kinds; Heads, radiate; Phyllaries, in 1+ slightly overlapping series, 6 mm. × 1.5 mm. wide, without oil glands, tip black dotted; Receptacle, epaleate; Rays, yellow, fertile; Disk flowers, yellow; Pappus, of well-developed bristles, in 1 series.

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Button-like caudex of Coll. No. 1858, Senecio integerrimus

Photographed 23 May 2018.

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Inflorescence of Coll. No. 1831, Senecio integerrimus

Scanned 30 October 2018.

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Coll. No. 1476, Senecio integerrimus

Scanned 28 December 2016.

Coll. No. 1476, 29 Jun 2016, characters observed: Short-lived perennial, 25-35 cm., roots, unbranched, fibrous, pubescence floccose or arachnose, appearing to thin with age; Leaves, basal, petiole 15 mm., + blade 50 mm. × 25 mm. wide, margin entire or slightly wavy, with reddish spots every 2-5 mm. (is this the callous denticle?), cauline, reduced above to sessile, narrowly lanceolate, 40 mm. × 5 mm. wide; Inflorescence, terminal corymb; Peduncles, to 18 mm., black exudate; Heads, #7-8, radiate; Involucre, 9 mm. × 10 mm. wide; Phyllaries, in 1 series, 9 mm. × 1.2-2.2 wide, tip black; Flowers, 2 kinds Rays, #9, fertile; Corolla, yellow, tube 3.5 mm. + blade 5 mm. = 8.5 mm.; Disk, corolla yellow, lobes dark; Anther, base, rounded (not tailed); Pappus, capillary bristles, 4 mm.

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Coll. No. 1108, Senecio integerrimus on Tin Cup Ridge.

Photographed 14 May 2015.

Coll. No. 1108, characters observed: Perennial herb, to 60 cm.; Leaves, basal and cauline, some densely tomentose along petiole and mid-vein, else thinly tomentose, basal, petiole 60 mm. + blade ovate 110 mm. × 35 mm. wide, margin entire to slightly scalloped (somewhat more like that described for P. crocata), cauline, sessile, lance-linear, 130 mm. × 15 mm. wide, reduced above, margins, some with small, dense, sharp teeth; Inflorescence, ±8 heads per stem; Phyllaries in 1 series, (partially enclosing alternate ray and disc flowers), 6 mm. × 1.7 mm. wide, tips mucronate; Receptacle epaleate; Pappus of bristles in ±1+ series, 6-7 mm.; Ray flowers, few (8-12), ♀-only, tube 4 mm. + blade 8 mm. = 12 mm. × 3 mm. wide; Disc flowers bisexual.

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        images/IMGQ0481sm.jpg

Senecio pudicus

Coll. No. 3176, Senecio pudicus.

Photographed 25 January 2024.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Senecio pudicus Greene.  Bashful Ragwort.

Guy Gulch, Jefferson County, Colorado. Southwest side of the gulch, 690 m. northwest of Centennial Ranch, 12.9 km. northwest of the GNIS location of Golden. 39.79827°N, 105.36073°W. WGS 1984 Elev. 2386 m. Composite. with nodding flowers. Steep slope above creek, twining through Symphoricarpos sp., with Erigeron speciosus.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3176. 31-Jul-2023

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        images/IMGQ6077sm.jpg

Senecio spartioides

Senecio spartioides adventive in my garden.

Photographed 6 September 2020.

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        images/IMGQ5199sm.jpg

Senecio spartioides adventive in my garden.

Photographed 6 September 2020.

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        images/IMGQ5195sm.jpg

Coll. No. 2231, Senecio spartioides with a praying mantis and a beetle.

Photographed 12 September 2019.

I'd tell you what kind of beetle that was except that Comcast has crapped out and I can't look it up.

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Coll. No. 1298, Senecio spartioides

Photographed 21 January 2016.

Coll. No. 1298, 23 Sep 2015, characters observed: Perennial herb, to 50 cm.; Leaves, basal, unknown, cauline, alternate, 90 mm. × 3 mm. wide, narrowly oblanceolate, reduced above to 30 mm. × 1 mm. wide, variously hairy in axils and ±lower surface; Involucre, 12.5 mm. × 6 mm., narrowly campanulate, bractlets not prominent; Phyllaries, 2 series? or 1 series with 2 forms? outer, 7.5 mm. × 0.7 mm. wide, all green, inner, 7.5 mm. × 1.3 mm. wide, centrally green with margins chartaceous, all tips dark; Receptacle, epaleate; Rays, fertile, corolla, tube 5 mm. + blade 9 mm. × 2 mm. wide, yellow, lobes 3; Disk flowers, corolla, 6 mm., yellow; Pappus, 1 series of fine capillary bristles, 5 mm.; Cypsela, 4 mm., 5-angled, dark gray, “hirtellous” throughout (not just the angles).

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        images/IMGQ1910sm.jpg

Flower Heads of Coll. No. 1298, Senecio spartioides

Photographed 21 January 2016.

Coll. No. 1298, 23 Sep 2015, characters observed: Perennial herb, to 50 cm.; Leaves, basal, unknown, cauline, alternate, 90 mm. × 3 mm. wide, narrowly oblanceolate, reduced above to 30 mm. × 1 mm. wide, variously hairy in axils and ±lower surface; Involucre, 12.5 mm. × 6 mm., narrowly campanulate, bractlets not prominent; Phyllaries, 2 series? or 1 series with 2 forms? outer, 7.5 mm. × 0.7 mm. wide, all green, inner, 7.5 mm. × 1.3 mm. wide, centrally green with margins chartaceous, all tips dark; Receptacle, epaleate; Rays, fertile, corolla, tube 5 mm. + blade 9 mm. × 2 mm. wide, yellow, lobes 3; Disk flowers, corolla, 6 mm., yellow; Pappus, 1 series of fine capillary bristles, 5 mm.; Cypsela, 4 mm., 5-angled, dark gray, “hirtellous” throughout (not just the angles).

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        images/TAS012980Head.jpg

Habitat of Coll. No. 1298, Senecio spartioides

Photographed 23 September 2015.

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        images/IMGQ1670sm.jpg

Senecio triangularis

Coll. No. 2003, Senecio triangularis

Photographed 25 January 2019.

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        images/IMGQ4854sm.jpg

Coll. No. 2003, Senecio triangularis

Scanned 25 January 2019.

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        images/TAS020030Infl.jpg

Habitat of Coll. No. 874, Senecio triangularis

Photographed 23 June 2012.

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        images/IMG30391sm.jpg

Coll. No. 874, Senecio triangularis

Photographed 6 July 2013.

Coll. No. 874, 23 June 2013, characters observed while keying: Perennial herb, to 80 cm., in shaded streamside, not strongly scented; Root and caudex unknown; Petiole 100 mm.; Leaves alternate, largest 100 mm. x 60 mm., distributed along stem gradually becoming smaller, ovate, base truncate, margin toothed, adaxial surface sticky with glandular exudate, glands inconspicuous; Inflorescence gen. flat-topped, 10-15 flowers; Phyllaries, in 1-series, few short narrow outer phyllaries, tips dark brown macroscopically; Receptacle palea 0; Flowers of 2 kinds, both ray and disk; Pappus of bristles (no scales or needle-like awns), well developed on ray and disk flowers; Ray flowers yellow, exceeding involucre.

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        images/IMG31527sm.jpg

Solidago gigantea

Coll. No. 2227, Solidago gigantea

Scanned 16 February 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago gigantea Aiton.  Giant Goldenrod.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, northwest corner of Ranson/Edwards, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 2.1 mi generally north on Plainview Road, then 200 m. west. 39.8974°N, 105.2738°W. WGS 1984 Elev. 2028 m. Leaf margins serrate, ciliate. In deep grassland with few ponderosa pines, also collected nearby: Antennaria rosea, Townsendia hookeri, Noccaea fendleri, and Frasera speciosa,

Collected by permit: Jefferson County Open Space, 2019, issued: Mar 1, 2019, to: Tom Schweich.

Tom Schweich 2227. 10-Sep-2019

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        images/TAS022270sm.jpg

Coll. No. 2422, Solidago gigantea

Photographed 28 December 2020.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Solidago gigantea Aiton.  Giant Goldenrod.

Deadman Gulch, Jefferson County, Colorado. In Deadman Gulch (Kinney Run) between US Highway 6 and Eagle Ridge Drive, on the edge of the perennial creek, around the retention pond, and further upstream along the creek, 3.17 km. south of the GNIS location of Golden. 39.7341°N, 105.2155°W. WGS 1984 Elev. 1793 m. Inflorescence full of little crab spiders colored the same yellow as the corollas.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2422. 17-Aug-2020

Coll. No. 2422, 17 Aug 2020, characters observed: Perennial herb, 60 cm. (growing on a steep stream bank); Stem, glabrous, becoming hairy in the inflorescence; Leaves, basal unknown, cauline, alternate, petiole, 5 mm. or subsessile, blade, 90 mm. × 15 mm. wide, distally reduced in size but abundant, lanceolate-elliptic, entire, ciliate with small curved hairs, distally widely-spaced serrate; Inflorescence, pyramidal, paniculate, ±secund; Peduncles, 3-5 mm.; Involucre, 3 mm. × 4 mm. wide, spheric(?), lightly glandular; Phyllaries, unequal, 2+ series, lower <rest of involucre, green to chartaceous, margins flat; Receptacle, very short scales(?), definitely not flat; Flowers, of 2 kinds; Rays, #11, tube 2 mm. + blade 1.5 mm. × 0.3 mm. wide, yellow, fertile; Disk flowers, #7 tube 2.8 mm. + lobes 0.9 mm., throat expanding gradually, yellow, open, bisexual; Pappus, bristles, 2.8 mm., equal; Stamens, not tailed; Style, 2-branched, ±brushlike appendages; Stigma, 0.5 mm., >style appendages (0.4 mm.); Fruit, 1 mm., hairy, beak-less.

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        images/IMGQ5287sm.jpg

Solidago missouriensis

Coll. No. 1732, Solidago missouriensis at North Table Mountain.

Photographed 7 January 2018.

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        images/IMGQ4525sm.jpg

Habitat of Coll. No. 1256, Solidago missouriensis at Ranson/Edwards.

Photographed 26 July 2015.

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        images/IMGQ1398sm.jpg

Coll. No. 1255, Solidago missouriensis

Photographed 24 December 2015.

Coll. No. 1255, 26 Jul 2015, characters observed: Perennial herb, to 40 cm., generally glabrous throughout; Leaves, cauline, petiole 45 cm. + blade 100 mm. × 21 mm. wide, oblanceolate, short toothed distally, glabrous, veins 5; Inflorescence, crowded panicle; Pedicels, 1 mm.; Bracts, #2, 1.8 mm.; Involucre, 4.5 mm. × 5 mm. wide, obconic; Receptacle, epaleate; Flowers, 2 kinds; Phyllaries, 2+ series, graduated, 2.2-3.5 mm., veins 1; Rays, fertile, tube 2 mm. + blade 2.2 mm., yellow; Disk flower, tube 2.8 mm. + lobes 0.7 mm. = 3.5 mm., yellow; Pappus, bristles, 3.0 mm.; cypsela, 0.4-0.6 mm., glabrous.

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        images/IMGQ1892sm.jpg

Three prominent veins in leaves of Coll. No. 1519, Solidago missouriensis

Scanned 13 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower east slopes of North Table Mountain, along the North Table Loop north of the Mesa Top Trail, 1.2 km. northwest of the Easley Road trailhead; 4.32 km. northeast of the GNIS location of Golden. 39.789°N, 105.1953°W. WGS 1984 Elev. 1829 m. Trailside in small outcrop of rocks.

Coll. No. 1519, 29 Jul 2016, characters observed: Perennial herb, to 35 cm.; Leaves, basal, unknown, cauline, alternate, petiole 10 mm. + blade 100 mm. × 22 mm. wide, oblanceolate, glabrous, margin, sparsely scabrous proximally, serrate distally, prominently 3(5)-nerved, reduced above; Heads, 3-4 mm. × 3-4 mm. wide; Phyllaries, 3+ series, 3.5 mm. × 1 mm. wide, green, margin chartaceous, veins, 1; Receptacle, epaleate, conic, Flowers, 2 kinds; Ray flowers, #12, yellow; Disk flowers, #12, yellow; Pappus, capillary bristles.

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        images/TAS015190Lf.jpg

Coll. No. 1255, Solidago missouriensis

Scanned 24 December 2015.

Flower head on right has been partially dissected.

Coll. No. 1255, 26 Jul 2015, characters observed: Perennial herb, to 40 cm., generally glabrous throughout; Leaves, cauline, petiole 45 cm. + blade 100 mm. × 21 mm. wide, oblanceolate, short toothed distally, glabrous, veins 5; Inflorescence, crowded panicle; Pedicels, 1 mm.; Bracts, #2, 1.8 mm.; Involucre, 4.5 mm. × 5 mm. wide, obconic; Receptacle, epaleate; Flowers, 2 kinds; Phyllaries, 2+ series, graduated, 2.2-3.5 mm., veins 1; Rays, fertile, tube 2 mm. + blade 2.2 mm., yellow; Disk flower, tube 2.8 mm. + lobes 0.7 mm. = 3.5 mm., yellow; Pappus, bristles, 3.0 mm.; cypsela, 0.4-0.6 mm., glabrous.

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        images/TAS012550Heads.jpg

Coll. No. 1519, Solidago missouriensis

Photographed 29 July 2016.

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        images/IMGQ3051sm.jpg

Solidago multiradiata

Coll. No. 2589, Solidago multiradiata “basal leaves strongly ciliate margined on the petiolar base.”

Photomicrograph 11 December 2021.

Plants of Colorado
Asteraceae

Solidago multiradiata Aiton.  Rocky Mountain Goldenrod.

North Fork West Tennessee Creek, Lake County, Colorado. About 300 m. east of Lily Lake, along Pike-San Isabel Forest Road 131, 2.6 road miles west of US Highway 24, 140 km. southwest of the GNIS location of Golden. 39.3522°N, 106.3655°W. WGS 1984 Elev. 3227 m. Dry rocky opening in lodgepole pine forest. Variety scopulorum per Ackerfield (2015) though infraspecific names are not widely recognized.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2589. 13-Jul-2021

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        images/TAS025890Pet.jpg

Coll. No. 2719, Solidago multiradiata.

Photographed 13 February 2022.

Plants of Colorado
Asteraceae

Solidago multiradiata Aiton.  Rocky Mountain Goldenrod.

Brumley, Lake County, Colorado. Subalpine forest on a bank between the access road to the Sno-Tel station and the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. 39.0875°N, 106.5423°W. WGS 1984 Elev. 3244 m. Petioles ciliate. One of three “goldenrods” growing together, the others are Oreochrysum parry and Solidago simplex. Brumley was a stage stop on the route across Independence Pass.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2719. 18-Aug-2021

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        images/IMGQ5607sm.jpg

Coll. No. 1992, Solidago multiradiata

Photographed 19 January 2019.

Coll. No. 1992, 24 July 2018, characters observed: Perennial herb, 18 cm., rhizomatous; Stem, proximal glabrous to distal glandular-hairy; Leaves, cauline, alternate, proximal petiole winged distinctly ciliate, distal apparently sessile (subclasping?), petiole, 40 mm., blade, 40 mm. × 10 mm. wide, narrowly oblanceolate, entire, margins, finely ciliate; Inflorescence, heads 15-20 per stem, not showy, triangular, >leaves; Involucre, 4 mm. × 7.5 mm. wide, ovoid; Phyllaries, #3± series, lower, slightly less than rest of involucre, few hairs similar to those on peduncles, mid-vein tan, body green, margin scarious, margins, flat, tip, acute; Flowers, 2 kinds; Ray flowers, #24-30, tube 2.5 mm. + blade 2.5 mm. × 1 mm. wide, yellow, fertile; Disk flowers, many, tube 3 mm. + lobes 0.7 mm., throat expanding, yellow; Pappus, many, well-developed capillary bristles, 3 mm., ±equal; Cypsela, 1 mm., brown, sparsely hairy.

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        images/IMGQ4837sm.jpg

Distinctly ciliate petiole of Coll. No. 1992, Solidago multiradiata

Scanned 19 January 2019.

Coll. No. 1992, 24 July 2018, characters observed: Perennial herb, 18 cm., rhizomatous; Stem, proximal glabrous to distal glandular-hairy; Leaves, cauline, alternate, proximal petiole winged distinctly ciliate, distal apparently sessile (subclasping?), petiole, 40 mm., blade, 40 mm. × 10 mm. wide, narrowly oblanceolate, entire, margins, finely ciliate; Inflorescence, heads 15-20 per stem, not showy, triangular, >leaves; Involucre, 4 mm. × 7.5 mm. wide, ovoid; Phyllaries, #3± series, lower, slightly less than rest of involucre, few hairs similar to those on peduncles, mid-vein tan, body green, margin scarious, margins, flat, tip, acute; Flowers, 2 kinds; Ray flowers, #24-30, tube 2.5 mm. + blade 2.5 mm. × 1 mm. wide, yellow, fertile; Disk flowers, many, tube 3 mm. + lobes 0.7 mm., throat expanding, yellow; Pappus, many, well-developed capillary bristles, 3 mm., ±equal; Cypsela, 1 mm., brown, sparsely hairy.

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        images/TAS019920Pet.jpg

Coll. No. 2009, Solidago multiradiata

Photographed 27 January 2019.

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        images/IMGQ4865sm.jpg

Solidago nana

Coll. No. 2439, Solidago nana.

Photographed 31 December 2020.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Solidago nana Nutt.  Baby Goldenrod.

Eagle Ridge, Jefferson County, Colorado. At the north end of “Eagle Ridge,” an informally named hogback between US Highway 6 and Eagle Ridge Drive, under the powerline tower, 3.36 km. south southeast of the GNIS location of Golden. 39.7328°N, 105.215°W. WGS 1984 Elev. 1846 m. Ponderosa pines and foothills shrubland, mostly Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2439. 28-Aug-2020

Coll. No. 2439, 28 August 2020, characters observed: Perennial herb, 25-30 cm., from a stout creeping caudex, short hairy throughout; Leaves, basal, petiole 30 mm. + blade 50 mm. × 18 mm. wide, obovate (almost spathulate), cauline, subsessile, 23 mm. × 8 mm wide, reduced distally, oblanceolate, entire, veins, #3, but lateral veins very obscure, eglandular, margins, entire, ciliate, tips, acuminate; Inflorescence, pyramidal, branches, secund, not overtopped by leaves; Peduncles, 1.0-1.3 mm.; Involucre, 3.5 mm. × 2.5-3.0 mm. wide, campanulate; Phyllaries, unequal, in 3+ series, upper, largest, 3 mm. × 1.3 mm. wide, veins, 1 prominent, maybe 2 lateral very obscure, green, margin, chartaceous, flat, tips, rounded, few little hairs; Receptacle, epaleate; Flowers, of 2 kinds; Rays, #5, tube 2 mm. + blade 1.2 mm. × 0.6 mm. wide, yellow, fertile; Disk flowers, #9, tube 3 mm. + lobes 0.7 mm., throat expanding gradually, yellow; Pappus, many, well-developed, bristles, 2.7 mm., ±equal.

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        images/IMGQ5304sm.jpg

Coll. No. 1759, Solidago nana

Photographed 12 January 2018

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        images/IMGQ4540sm.jpg

Coll. No. 1292, Solidago nana

Photographed 19 January 2016.

Coll. No. 1292, 9 Sep 2015, characters observed: Perennial herb, to 40 cm., short white hairy throughout; Leaves, basal, withered (late in season), cauline, alternate, 95 mm. × 9-10 mm. wide (includes 15 mm. winged petiole? below) veins, 1 (others discontinuous), margin hairs similar to surface hairs, i.e., not ciliate, gradually reduced and sessile above; Inflorescence, heads numerous and small, involucre, 5.5 mm.; Phyllaries, 3-4 series, imbricate, graduated, 3-4 mm., veins 1; Receptacle, epaleate, (scales? to 0.5 mm.); Flowers of 2 kinds; Rays, few (3-4), fertile? (stigma visible but cypsela not as developed as those of disk flowers), corolla, 6 mm., yellow; Disk flowers, few (6-8), corolla, 4 mm., yellow; Pappus, capillary bristles; Cypsela, 1.5 mm., short hairy.

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        images/IMGQ1906sm.jpg

Solidago nemoralis decemflora

Habit of Coll. No. 2433, Solidago nemoralis ssp. decemflora

Photographed 19 August 2020.

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        images/20200819_112010sm.jpg

Coll. No. 2433, Solidago nemoralis ssp. decemflora

Photographed 30 December 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.56 km. south of the GNIS location of Golden. 39.7239°N, 105.2198°W. WGS 1984 Elev. 1886 m. Leaves strongly 3-nerved, inflorescences with many mating assassin bugs. Large patch perhaps 40 m. × 10 m. Mixed foothills grass- and shrub-land, the grasses having long since senesced in this long, hot, dry summer. Compare to Coll. No. 2432, made 140 m. to the northeast.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2433. 19-Aug-2020

Coll. No. 2432 & 2433, 19 Aug 2020, characters observed: Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm.

I'm not sure what this is. It keys to Solidago nemoralis var. decemflora in Ackerfield (2015), but does not look much like photos or voucher images on SEINet. It keys to S. nana in Weber & Wittmann (2012), but also does not look much like photos or voucher images on SEINet. It does seem to fit into Solidago subsect. nemorales per Semple (2018). I suppose it could be a hybrid of some sort. I am open to other suggestions.

Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net

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        images/IMGQ5300sm.jpg

Voucher of Coll. No. 2433, Solidago nemoralis ssp. decemflora.

Photographed 5 January 2020. This voucher will be distributed to JCOS.

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        images/IMGQ5307sm.jpg

Voucher of Coll. No. 2432, Solidago nemoralis ssp. decemflora.

Photographed 5 January 2020. This voucher will be distributed to JCOS.

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        images/IMGQ5308sm.jpg

Flower parts of Coll. Nos. 2432 & 2433, Solidago nemoralis ssp. decemflora.

Scanned 30 December 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.46 km. south of the GNIS location of Golden. 39.7248°N, 105.2193°W. WGS 1984 Elev. 1869 m. Small patch perhaps 3 meters across. Mixed foothils grass- and shrub-land. Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides, and Xanthisma spinulosum; the grasses having long since senesced. Compare to Coll. No. 2433, collected 140 m. southwest.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2432. 19-Aug-2020

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.56 km. south of the GNIS location of Golden. 39.7239°N, 105.2198°W. WGS 1984 Elev. 1886 m. Leaves strongly 3-nerved, inflorescences with many mating assassin bugs. Large patch perhaps 40 m. × 10 m. Mixed foothills grass- and shrub-land, the grasses having long since senesced in this long, hot, dry summer. Compare to Coll. No. 2432, made 140 m. to the northeast.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2433. 19-Aug-2020

Coll. No. 2432 & 2433, 19 Aug 2020, characters observed: Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm.

I'm not sure what this is. It keys to Solidago nemoralis var. decemflora in Ackerfield (2015), but does not look much like photos or voucher images on SEINet. It keys to S. nana in Weber & Wittmann (2012), but also does not look much like photos or voucher images on SEINet. It does seem to fit into Solidago subsect. nemorales per Semple (2018). I suppose it could be a hybrid of some sort. I am open to other suggestions.

Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net

Article records that use this photograph:

        images/TAS02332-3_Fl_Pts.jpg

Coll. No. 2432, Solidago nemoralis ssp. decemflora

Photographed 30 December 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.46 km. south of the GNIS location of Golden. 39.7248°N, 105.2193°W. WGS 1984 Elev. 1869 m. Small patch perhaps 3 meters across. Mixed foothils grass- and shrub-land. Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides, and Xanthisma spinulosum; the grasses having long since senesced. Compare to Coll. No. 2433, collected 140 m. southwest.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2432. 19-Aug-2020

Coll. No. 2432 & 2433, 19 Aug 2020, characters observed: Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm.

I'm not sure what this is. It keys to Solidago nemoralis var. decemflora in Ackerfield (2015), but does not look much like photos or voucher images on SEINet. It keys to S. nana in Weber & Wittmann (2012), but also does not look much like photos or voucher images on SEINet. It does seem to fit into Solidago subsect. nemorales per Semple (2018). I suppose it could be a hybrid of some sort. I am open to other suggestions.

Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net

Article records that use this photograph:

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Coll. No. 3222, Solidago nemoralis ssp. decemflora.

Photographed 4 February 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton ssp. decemflora (de Candolle) Brammall ex Semple.  Gray Goldenrod.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Northwest corner of Survey Field, north-facing slope of small gulch, 1.97 km. southwest of the GNIS location of Golden. 39.73902°N, 105.22941°W. WGS 1984 Elev. 1873 m. Highest Great Plains at base of Rocky Mountain Front Range scarp, with Juniperus scopulorum and Pinus ponderosa.

Collected by permit: Colorado School of Mines, Edgar Mine 2022, issued: May 31, 2022, to: Tom Schweich.

Tom Schweich 3222. 17-Sep-2023

Article records that use this photograph:

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Location of a large colony of Solidago nemoralis ssp. decemflora in Apex Park.

Photographed 19 August 2020.

I think the grass is drying and turning brown, while the Solidago is mid-bloom and green, thus highlighting the colony.

Article records that use this photograph:

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Solidago rigida humilis

Coll. No. 1280, Solidago rigida var. humilis

Photographed 14 January 2016.

Coll. No. 1280, 28 August 2015, characters observed: Herbaceous perennial, to 70 cm., apparently reproducing in part by offsets (“caudices branching”), short spreading hairy throughout; Leaves, basal and cauline, basal, #3-8, petiole, 15 cm., blade, 12.5 cm. × 6 cm. wide, ovate, entire, withered at flowering, cauline, alternate, sessile, 60 mm. × 27 mm. wide, ovate, entire, reduced above; Inflorescence, cymose, heads borne singly on short pedicels; Phyllaries, 2+ series, graduated, largest, 4.5 mm. × 1.3 mm. wide, tip obtuse, veins 3, ciliate distally; Receptacle, convex, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, 5.5 mm. × 0.8 mm. wide, yellow; Disk flowers, corolla, 5 mm., yellow; Pappus, bristles, 1 series; Cypsela, 1 mm., glabrous.

Article records that use this photograph:

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Inflorescence of Coll. No. 1280, Solidago rigida var. humilis

Scanned 14 January 2016.

Coll. No. 1280, 28 August 2015, characters observed: Herbaceous perennial, to 70 cm., apparently reproducing in part by offsets (“caudices branching”), short spreading hairy throughout; Leaves, basal and cauline, basal, #3-8, petiole, 15 cm., blade, 12.5 cm. × 6 cm. wide, ovate, entire, withered at flowering, cauline, alternate, sessile, 60 mm. × 27 mm. wide, ovate, entire, reduced above; Inflorescence, cymose, heads borne singly on short pedicels; Phyllaries, 2+ series, graduated, largest, 4.5 mm. × 1.3 mm. wide, tip obtuse, veins 3, ciliate distally; Receptacle, convex, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, 5.5 mm. × 0.8 mm. wide, yellow; Disk flowers, corolla, 5 mm., yellow; Pappus, bristles, 1 series; Cypsela, 1 mm., glabrous.

Article records that use this photograph:

        images/TAS012800Infl.jpg

Phyllaries of Coll. No. 1280, Solidago rigida var. humilis

Scanned 14 January 2016.

The thing to see are the multiple striations on the adaxial surface of the phyllaries.

Coll. No. 1280, 28 August 2015, characters observed: Herbaceous perennial, to 70 cm., apparently reproducing in part by offsets (“caudices branching”), short spreading hairy throughout; Leaves, basal and cauline, basal, #3-8, petiole, 15 cm., blade, 12.5 cm. × 6 cm. wide, ovate, entire, withered at flowering, cauline, alternate, sessile, 60 mm. × 27 mm. wide, ovate, entire, reduced above; Inflorescence, cymose, heads borne singly on short pedicels; Phyllaries, 2+ series, graduated, largest, 4.5 mm. × 1.3 mm. wide, tip obtuse, veins 3, ciliate distally; Receptacle, convex, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, 5.5 mm. × 0.8 mm. wide, yellow; Disk flowers, corolla, 5 mm., yellow; Pappus, bristles, 1 series; Cypsela, 1 mm., glabrous.

Article records that use this photograph:

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Corymbiform inflorescence of Coll. No. 1769, Solidago rigida var. humilis

Scanned 14 January 2018.

Article records that use this photograph:

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Solidago simplex

Coll. No. 2718, Solidago simplex.

Photographed 13 February 2022.

Plants of Colorado
Asteraceae

Solidago simplex Kunth.  Sticky Goldenrod.

Brumley, Lake County, Colorado. Subalpine forest on a bank between the access road to the Sno-Tel station and the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. 39.0877°N, 106.5422°W. WGS 1984 Elev. 3239 m. Oblanceolate leaves, crenate. One of three “goldenrods” growing together, the others are Oreochrysum parry and Solidago multiradiata. Brumley was a stage stop on the route across Independence Pass.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2718. 18-Aug-2021

Article records that use this photograph:

        images/IMGQ5606sm.jpg

Solidago speciosa

Image of KHD65160, Schweich Coll. No. 1768, Solidago speciosa.

Usage Rights: CC0 1.0 (Public-domain)

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Solidago speciosa.

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Solidago speciosa pallida

Basal leaf and inflorescence of Coll. No. 1768, Solidago speciosa var. pallida

Photographed 13 January 2018.

Coll. No. 1768, 1 Sep 2017, characters observed: Perennial herb, 50-55 cm., new rosette growing from caudex while flowering from adjacent stem; Stem, glabrous, reddish; Leaves, new rosette of basal leaves, petiole 38-55 mm., blade 80 mm. × 25 mm. wide, pinnately veined, glabrous, margin minutely ciliate, basal leaves of flowering stem, withered, cauline leaves, reduced, not clasping, short petioled 18-0 mm. distally, glabrate, turning reddish, margin ciliate; Inflorescence, panicle-like (only 1° and 2° branches), minutely glandular among heads; Heads, many, 6 mm. × 2.3 mm. wide; Peduncles, 2 mm.; Involucre, 3.5 mm. × 2.5 mm. wide; Phyllaries, 3+ graduated series, 1.7-3.0 mm. × 0.7 mm. wide, vein, 1, tip, obtuse, ciliate; Receptacle, epaleate; Flowers, 2 kinds; Rays, few (#2), tube 2 mm. + blade 2 mm., yellow, fertile; Disc flowers, #10-12, tube 3 mm. + lobes 1 mm., yellow; Pappus, bristles, 3 mm.; Cypsela, 1 mm., glabrous (sparse small hairs).

Article records that use this photograph:

        images/TAS017680Det.jpg

Coll. No. 1768, Solidago speciosa var. pallida

Photographed 13 January 2018.

Coll. No. 1768, 1 Sep 2017, characters observed: Perennial herb, 50-55 cm., new rosette growing from caudex while flowering from adjacent stem; Stem, glabrous, reddish; Leaves, new rosette of basal leaves, petiole 38-55 mm., blade 80 mm. × 25 mm. wide, pinnately veined, glabrous, margin minutely ciliate, basal leaves of flowering stem, withered, cauline leaves, reduced, not clasping, short petioled 18-0 mm. distally, glabrate, turning reddish, margin ciliate; Inflorescence, panicle-like (only 1° and 2° branches), minutely glandular among heads; Heads, many, 6 mm. × 2.3 mm. wide; Peduncles, 2 mm.; Involucre, 3.5 mm. × 2.5 mm. wide; Phyllaries, 3+ graduated series, 1.7-3.0 mm. × 0.7 mm. wide, vein, 1, tip, obtuse, ciliate; Receptacle, epaleate; Flowers, 2 kinds; Rays, few (#2), tube 2 mm. + blade 2 mm., yellow, fertile; Disc flowers, #10-12, tube 3 mm. + lobes 1 mm., yellow; Pappus, bristles, 3 mm.; Cypsela, 1 mm., glabrous (sparse small hairs).

Article records that use this photograph:

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Solidago spectabilis

Collection No. 495, Solidago spectabilis

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

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        images/TAS004950oview.jpg

Coll. No. 1022, Solidago spectabilis

Scanned 3 January 2015.

Coll. No. 1022, 24 July 2014, characters observed while keying: Perennial herb to 75 cm.; Stem hairy distally, fewer hairs proximally, not waxy, distal nodes with axillary leaf clusters; Leaves alternate, lanceolate, 85 mm. × 13 mm. wide, generally glabrous,not resinous, proximal leaves withered at flowering (assumed to having been equal in size to mid-cauline leaves), margins weakly serrate, and with very small hairs; Inflorescence pyramid-shaped; Peduncle bracts not glandular; Involucre 3 mm.; Phyllaries in 2+ graduated series, outer without oil glands; Heads many, small (5 mm. × 4 mm. dia.), not resinous; Flowers of two kinds, at least some strap-shaped; Receptacle epaleate; Rays, yellow, fertile; Disc, yellow, fertile; Pappus of well-developed bristles, in single row.

Article records that use this photograph:

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Solidago velutina sparsiflora

Coll. No. 2735, Solidago velutina ssp. sparsiflora

Photographed 16 Febriary 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago velutina DC. ssp. sparsiflora (A. Gray) Semple.  Three-Nerve Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Base of the Front Range scarp, in a flat area between two drainages, northeast corner of Apex Park, above an unnamed drainage through the Stonebridge HOA, 4.58 km. south of the GNIS location of Golden. 39.7239°N, 105.2197°W. WGS 1984 Elev. 1885 m.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with Cindy Trujillo 2735. 1-Sep-2021

Coll. No, 2735, 1 Sep 2021, characters observed: Perennial herb, to 50 cm., rhizomatous; Stem, spreading hispid, to glandular in inflorescence; Leaves, basal, withered, cauline, sessile, blade 95 mm. × 27 mm. wide, reduced distally, 3-nerved, hispid proximally thinning distally, entire to distally serrate, ciliate; Inflorescence, >leaves, paniculiform arrays, heads many per stem; Peduncles, 1.5-3.0 mm.; Involucre, 4.0-4.5 mm. × 2.3-3.0 mm. wide, campanulate; Phyllaries, 4 graduated series, largest (inner) 4 mm. × 1 mm. wide, chartaceous base to greenish distally, margin more fringed than ciliate; Receptacle, epaleate; Flowers, of 2 kinds; Rays, #7, tube 2.4 mm. + blade 2.4 mm. × 0.6 mm. wide, yellow, sterile(?); Disk flowers, #6, tube 1 mm. + throat 2 mm. + lobes (large!) 1 mm. = 4 mm., throat expanding gradually, tube green to throat and lobes yellow; Pappus, many, well-developed bristles, ±equal disk corollas, 3.5-4.0 mm.; Style, 2-branched, ±brush-like appendages; Stigma, 0.6-0.7 mm., >style appendages (0.5 mm.); Cypsela, 1.2 mm., tan hairy;

Directed away from Sect. Nemorales because basal leaves are withered at flowering, and because the distal cauline leaves are gradually reduced while remaining similar to mid-cauline leaves.

Corollas & pappi more in range of S. velutina than S. mollis.

Compare to Loraine Yeatts #818 1983-0829, from South Table Mountain (BRYV0278879, KHD00009873).

Article records that use this photograph:

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Coll. No. 2659, Solidago velutina ssp. sparsiflora

Photographed 30 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago velutina DC. ssp. sparsiflora (A. Gray) Semple.  Three-Nerve Goldenrod.

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, crossed west to east by Bull Gulch, 130 m. west from the eastern boundary, north bank, approx. opposite the giant boulder, 1.36 km. north northwest of the main gate, and 23.0 km. north northwest of the GNIS location of Golden. 39.9082°N, 105.2774°W. WGS 1984 Elev. 1969 m. Lvs. sparse, 3-nerved, strigose, entire. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2659. 7-Aug-2021

Article records that use this photograph:

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Sphaeromeria potentilloides nitrophil

Coll. No. 623.1

Scanned 11 June 2011.

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Coll. No. 623.1

Scanned 11 June 2011.

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        images/TAS006231Det.jpg

Leaf detail of Coll. No. 623.1, Sphaeromeria potentilloides var. nitrophila

Scanned 22 Sep 2011, grid is 10 x 10 to the inch.

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        images/TAS006231leaf.jpg

Stenotus acaulis

Coll. No. 971, Stenotus acaulis

Scanned on 10 Feb 2014.

Coll. No. 971, 22 May 2013, characters observed: Perennial tufted herb, to 8 cm., from a branched caudex, few short stalked glands; Leaves, (look opposite to me) alternate, cauline leaves only at base, winged petiole 4 mm. + blade 9 mm. = 13 mm. × 2.5 mm. wide, elliptic, entire, tip acuminate, 3-veined, outer 2 veins irregularly curved; Inflorescence, of 2 kinds of flowers, Heads, solitary, 13 mm. × 10-12 mm. wide; Phyllaries, in 2 graduated series, not in vertical ranks; Receptacle, epaleate; Rays, #4-5, 12 mm., yellow, fertile; Pappus, of well-developed bristles in single series, white.

Article records that use this photograph:

        images/TAS009710Oview.jpg

Stephanomeria exigua exigua

Collection No. 496, Stephanomeria exigua ssp. exigua

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

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        images/TAS004960oview.jpg

Stephanomeria exigua ssp. exigua, Coll. No. 496

Photograph taken August 2, 2007 in a dry area beside Bohler Creek.

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Collection No. 496, Stephanomeria exigua ssp. exigua

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

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        images/TAS004960det.jpg

Coll. No. 704, Stephanomeria exigua ssp. exigua

Scanned 15 Nov 2011.

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Stephanomeria pauciflora

Runcinate leaves of Coll. No. 1515, Stephanomeria pauciflora

Scanned 12 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower east slopes of North Table Mountain, between North Table Loop and Mesa Top Trail, 0.7 km. northwest of the Easley Road trailhead; 3.9 km. northeast of the GNIS location of Golden. 39.7841°N, 105.1952°W. WGS 1984 Elev. 1798 m. Grassy southeast-facing slope.

Coll. No. 1518, 29 July 2016, characters observed: Perennial, shrub-like, to 30 cm.; Leaves, alternate, sessile, 80 mm. × 15 mm. wide, lanceolate, deeply toothed (runcinate); Heads, many; Phyllaries, 3 graduated series, 4-9 mm. × 1.3-1.5 mm. wide; Flowers, 1 kind; Rays, #5, 12 mm. × 2.5 mm. wide, white, fading tan; Pappus, bristles, connate into 5 groups corresponding to ribs of cypsela, 7 mm., plumose upper 3/4; Cypsela, 4 mm., beak, 0, rugose-tuberculate, 5 broad ribs.

Article records that use this photograph:

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Coll. No. 1515, Stephanomeria pauciflora

Photographed 12 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower east slopes of North Table Mountain, between North Table Loop and Mesa Top Trail, 0.7 km. northwest of the Easley Road trailhead; 3.9 km. northeast of the GNIS location of Golden. 39.7841°N, 105.1952°W. WGS 1984 Elev. 1798 m. Grassy southeast-facing slope.

Coll. No. 1518, 29 July 2016, characters observed: Perennial, shrub-like, to 30 cm.; Leaves, alternate, sessile, 80 mm. × 15 mm. wide, lanceolate, deeply toothed (runcinate); Heads, many; Phyllaries, 3 graduated series, 4-9 mm. × 1.3-1.5 mm. wide; Flowers, 1 kind; Rays, #5, 12 mm. × 2.5 mm. wide, white, fading tan; Pappus, bristles, connate into 5 groups corresponding to ribs of cypsela, 7 mm., plumose upper 3/4; Cypsela, 4 mm., beak, 0, rugose-tuberculate, 5 broad ribs.

Article records that use this photograph:

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Symphyotrichum campestre

Coll. No. 830, Symphyotrichum campestre

Scanned 15 February 2013.

Article records that use this photograph:

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Symphyotrichum ericoides

Coll. No. 3198, Symphyotrichum ericoides.

Photographed 30 January 2024.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Symphyotrichum ericoides (Linnaeus) G. L. Nesom.  White Heath Aster.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Bank of unnamed creek, near southern boundary of the southeast quadrant of Survey Field, 2.49 km. (geodesic) south of the GNIS location of Golden. 39.73319°N, 105.22078°W. WGS 1984 Elev. 1822 m.

Collected by permit: Colorado School of Mines, 2023, issued: May 9, 2023, to: Tom Schweich.

Tom Schweich 3198. 27-Aug-2023

Article records that use this photograph:

        images/IMGQ6088sm.jpg

Coll. No. 1743.5, Symphyotrichum ericoides

Photographed 3 October 2017.

Perennial, woody at base, stems ascending, to 40 cm., spreading vegetatively, short hairy and minutely glandular throughout; Leaves, alternate, sessile, narrowly lanceolate or oblong, 7-9 mm. × 1.5 mm. wide, entire, strigose, tip, small white spine; Heads, borne singly along stem, occasionally 2 per stem, on leafy pedicels; Flowers, of 2 kinds; Involucre, 4 mm. × 5 mm. wide, bell-shaped; Phyllaries, 2+ series, 3-4 mm. × 0.7-0.8 mm. wide, white below with 1 brown or green vein, rhomboid green above, tip with very small spine; Receptacle, epaleate; Rays, corolla, white, tube 2 mm + ligule 5.0-6.5 mm., fertile; Disc flowers, corolla, yellow, tube 3.5 mm. + lobes 0.5 mm., (some?) lobes reddish; Pappus, bristles, fine, barbelate, 4 mm.; Cypsela, 1 mm. (Described from Coll. No. 1558, 3 September 2016 and Coll. No. 1743.5, 23 August 2017).

Article records that use this photograph:

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Symphyotrichum falcatum

Inflorescence of Coll. No. 1300, Symphyotrichum falcatum

Scanned 22 January 2016.

Coll. No. 1300, 23 Sep 2015, characters observed: Perennial herb, to 40 cm., scabrous throughout; Leaves, basal, unknown, cauline, alternate, sessile, 32 mm. × 2.7 mm. wide, linear-oblanceolate, entire, tip spinulose, gradually reduced above; Inflorescence, extended panicle; Involucre, 5 mm. × 4.5 mm. wide; Phyllaries, in 4 graduated series, 3-5 mm. × 0.8 mm. wide, chartaceous below, green above, elliptical, tip spinulose except innermost; Receptacle, epaleate; Flowers of 2 kinds, Rays, pistillate, corolla, tube 2.5 mm. + laminae 5 mm. × 1.3 mm, white spatulate; Disk flowers, corolla, 4 mm., some rose to purple, some yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 1 mm., hairy.

Article records that use this photograph:

        images/TAS013000Infl.jpg

Coll. No. 1300, Symphyotrichum falcatum

Scanned 22 January 2016.

Coll. No. 1300, 23 Sep 2015, characters observed: Perennial herb, to 40 cm., scabrous throughout; Leaves, basal, unknown, cauline, alternate, sessile, 32 mm. × 2.7 mm. wide, linear-oblanceolate, entire, tip spinulose, gradually reduced above; Inflorescence, extended panicle; Involucre, 5 mm. × 4.5 mm. wide; Phyllaries, in 4 graduated series, 3-5 mm. × 0.8 mm. wide, chartaceous below, green above, elliptical, tip spinulose except innermost; Receptacle, epaleate; Flowers of 2 kinds, Rays, pistillate, corolla, tube 2.5 mm. + laminae 5 mm. × 1.3 mm, white spatulate; Disk flowers, corolla, 4 mm., some rose to purple, some yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 1 mm., hairy.

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Symphyotrichum foliaceum apricum

Coll. No. 3138, Symphyotrichum foliaceum var. apricum.

Photographed 17 January 2024.

Plants of Colorado
Asteraceae

Symphyotrichum foliaceum (DC.) G. L. Nesom var. apricum (A. Gray) G. L. Nesom.  Parry's Aster.

Evans Gulch, Lake County, Colorado. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. 39.2607°N, 106.22029°W. WGS 1984 Elev. 3450 m. Quite glandular-hairy. Sunny open southeast-facing slope.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3138. 20-Jul-2023

Coll. No. 3138, 20 July 2023, characters observed: Perennial, to 7 cm. (one previous year scape to 20 cm.); Stem, hairy, not in distinct lines, becoming glandular above; Leaves, basal, petiole 9 mm. + blade 20 mm. × 7 mm. wide, oblanceolate, ciliate, less so above; cauline, 24 mm. × 6 mm., sessile, neither auriculate nor clasping, narrowly lanceolate; Phyllaries, 3 series, outer > inner, green, purple-tipped, inner becoming scarious on margins, glandular-hairy; Receptacle, epaleate; Ray flowers, blue, tube 2.5 mm. + blade 7 mm. × 1.2 mm. wide, fertile; Disk flowers, yellow, tube 3 mm. gradually expandin, + lobes, 0.3 mm.; Pappus, capillary bristles, one series.

Article records that use this photograph:

        images/IMGQ6068sm.jpg

Symphyotrichum foliaceum parryi

Coll. No. 2728, Symphyotrichum foliaceum var. parryi

Photographed 15 February 2022.

Plants of Colorado
Asteraceae

Symphyotrichum foliaceum (DC.) G. L. Nesom var. parryi (D. C. Eaton) G. L. Nesom.  Parry's Aster.

Brumley, Lake County, Colorado. Sandy abandoned oxbow of the North Fork of Lake Creek, about 145 m. north of the Sno-Tel station road turnoff from the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. 39.0903°N, 106.5419°W. WGS 1984 Elev. 3235 m. Long rhizomatous, rays white, slightly tinged lavender. Somewhat older and more vegetated portion of the sandy bar. Brumley was a stage stop on the route across Independence Pass.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2728. 18-Aug-2021

Coll. No. 2728, 18 Aug 2021, characters observed: Perennial herb, to 12 cm., long rhizomatous; Stem, proximal glabrate, hairy in lines decurrent from leaf bases, hairy in inflorescence; Leaves, basal and cauline, alternate, petiole 20 mm. + blade 90 mm. × 22 mm. wide, reduced distally, entire, ciliate, tips, rounded; Inflorescence, heads 1-4 per stem, ≥leaves; Involucre, 8 mm. × 12 mm. wide, hemispheric; Phyllaries, graduated, 3±-series, chartaceous base to tip green, eglandular, margins, flat, somewhat ciliate, tip, acute, some reflexed(?); Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, many, tube 2 mm. + blade 10 mm. × 1.7 mm. wide, white, some tinged lavender, fading to lavender, fertile; Disk flowers, many, tube 4.5 mm. + lobes 0.5 mm., yellow; Pappus, many, bristles, 3.0-3.7 mm., ±equal; Cypsela, 2.5 mm. × 0.5 mm. wide, light brown, sparsely hairy.

Article records that use this photograph:

        images/IMGQ5613sm.jpg

Coll. No. 2728, Symphyotrichum foliaceum var. parryi as it came out of the press.

Photographed 1 Sep 2021.

Article records that use this photograph:

        images/20210901_171201sm.jpg

Symphyotrichum frondosum

Habitat of short-rayed comp., Coll. No. 904, Symphyotrichum frondosum

Photographed 26 August 2012.

Article records that use this photograph:

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Coll. No. 905, Asteraceae Symphyotrichum frondosum

Scanned 2 Sep 2013.

Annual herb, to 30 cm., sap milk unknown; Root neither clearly fibrous nor a single tap root; Stem branched at base or not, young stem sparsely hairy; Leaves cauline, alternate, 4 cm × 6 mm wide, oblanceolate, puberulent, sparsely ciliate; Inflorescence, head enclosed by involucre, not overtopped by leaves; Involucre bell- or conic-shaped; Phyllaries unequal, in 3± series, inner thin, nearly transparent; Receptacle epaleate; Flowers of 2 kinds, ray flowers, blade 2 mm, lavender, inconspicuous; disc flowers ...; Pappus of many well-developed bristles, ±equal, barely plumose, some disc flowers also have a single long scale.

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        images/TAS009040Oview.jpg

Coll. No. 905, Asteraceae Symphyotrichum frondosum

Scanned 2 Sep 2013.

Annual herb, to 30 cm., sap milk unknown; Root neither clearly fibrous nor a single tap root; Stem branched at base or not, young stem sparsely hairy; Leaves cauline, alternate, 4 cm × 6 mm wide, oblanceolate, puberulent, sparsely ciliate; Inflorescence, head enclosed by involucre, not overtopped by leaves; Involucre bell- or conic-shaped; Phyllaries unequal, in 3± series, inner thin, nearly transparent; Receptacle epaleate; Flowers of 2 kinds, ray flowers, blade 2 mm, lavender, inconspicuous; disc flowers ...; Pappus of many well-developed bristles, ±equal, barely plumose, some disc flowers also have a single long scale.

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        images/TAS009040Infl.jpg

Symphyotrichum laeve

Flower head of Coll. No. 1291, Symphyotrichum laeve

Scanned 18 January 2016.

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        images/TAS012910Head.jpg

Habitat of Coll. No. 1291, Symphyotrichum laeve

Photographed 9 September 2015.

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        images/IMGQ1631sm.jpg

Symphyotrichum lanceolatum hesperium

Coll. No. 724, Symphyotrichum lanceolatum var. hesperium

Scanned 24 Oct 2011. The heads on left have been partially dissected to aid in identification.

Originally determined as Erigeron philadelphicus, but in Taylor's (2010) key, phyllaries in multiple series leds one away from Erigeron.

Characters observed while keying this collection: Perennial from fibrous roots and rhizomes, not thistle- like; generally > 4 dm tall (observed 3.5-4.5 dm); Stem pubesence uniform and sparse; Leaves basal withered at flowering, without spinulose tip; Peduncle not glandular; Involucre not glandular; Receptacle naked; Phyllaries in multiple series, could be >3; Outer phyllaries not chartaceous (paper-like) but could have scarious margins to half their length, elongate green area at tip, tip acuminate; Flowers not all ligulate; Ray flowers conspicuous, color violet or purple; Disk flowers style branches not tipped with tufted yellow hairs; Achenes with pappus of hairs.

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        images/TAS007240Det.jpg

Symphyotrichum porteri

Habitat of Coll. No. 1297, Symphyotrichum porteri on Tin Cup Ridge.

Photographed 23 September 2015.

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        images/IMGQ1663sm.jpg

Coll. No. 1266, Symphyotrichum porteri

Scanned 7 January 2015.

Coll. No. 1266, 29 Jul 2015, characters observed: Perennial herb, to 35 cm., eglandular, generally not hairy; Stem ascending; Leaves, cauline, alternate, sessile, 53 mm. × 3 mm. wide, lance-linear, many rolled, tip pointed, maybe spinulose, generally glabrous except some distal margins; Inflorescence, crowded, ±flat-topped; Heads borne simgly on short pedicels; Involucre, 5 mm. × 8 mm. wide; Phyllaries, 2+series, 3.5 mm. × 0.7 mm. wide, ±equal, inner ≥ outer, mid-vein green, margins white proximally, green distally, tip acute; Receptacle, epaleate, convex (if not conic); Flowers of two kinds; Rays, fertile, corolla, 6.5 mm., white; Disk flowers, corolla, 3.0 mm., yellow; Pappus, bristles, barbed, single, 2.5 mm.; Cypsela, 0.7 mm., sparsely hairy.

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        images/TAS012660Oview.jpg

Ciliate leaf margins on basal leaf clusters of Coll. No. 1290, Symphyotrichum porteri

Scanned 18 Jan 2016.

Generally, described as the “smooth white aster,” these plants are for the most part glabrous. However, the leaves of new shoots near the base of the plant clearly have cilia. Margins of distal leaves are glabrous.

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        images/TAS012900Leaf2.jpg

Head of Coll. No. 1266, Symphyotrichum porteri

Scanned 7 January 2015.

Coll. No. 1266, 29 Jul 2015, characters observed: Perennial herb, to 35 cm., eglandular, generally not hairy; Stem ascending; Leaves, cauline, alternate, sessile, 53 mm. × 3 mm. wide, lance-linear, many rolled, tip pointed, maybe spinulose, generally glabrous except some distal margins; Inflorescence, crowded, ±flat-topped; Heads borne simgly on short pedicels; Involucre, 5 mm. × 8 mm. wide; Phyllaries, 2+series, 3.5 mm. × 0.7 mm. wide, ±equal, inner ≥ outer, mid-vein green, margins white proximally, green distally, tip acute; Receptacle, epaleate, convex (if not conic); Flowers of two kinds; Rays, fertile, corolla, 6.5 mm., white; Disk flowers, corolla, 3.0 mm., yellow; Pappus, bristles, barbed, single, 2.5 mm.; Cypsela, 0.7 mm., sparsely hairy.

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        images/TAS012660Head.jpg

Habitat of Coll. No. 1266, Symphyotrichum porteri

Photographed 29 July 2015.

Coll. No. 1266, 29 Jul 2015, characters observed: Perennial herb, to 35 cm., eglandular, generally not hairy; Stem ascending; Leaves, cauline, alternate, sessile, 53 mm. × 3 mm. wide, lance-linear, many rolled, tip pointed, maybe spinulose, generally glabrous except some distal margins; Inflorescence, crowded, ±flat-topped; Heads borne simgly on short pedicels; Involucre, 5 mm. × 8 mm. wide; Phyllaries, 2+series, 3.5 mm. × 0.7 mm. wide, ±equal, inner ≥ outer, mid-vein green, margins white proximally, green distally, tip acute; Receptacle, epaleate, convex (if not conic); Flowers of two kinds; Rays, fertile, corolla, 6.5 mm., white; Disk flowers, corolla, 3.0 mm., yellow; Pappus, bristles, barbed, single, 2.5 mm.; Cypsela, 0.7 mm., sparsely hairy.

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        images/IMGQ1427sm.jpg

Coll. No. 1279, Symphyotrichum porteri

Scanned 14 January 2016.

Coll. No. 1279, 20 Aug 2015, characters observed: Perennial herb, to 25 cm., ascending, spreading by rhizomes and rooting stems, generally glabrous, except as noted; Leaves, alternate, cauline, lower leaves shriveled at flowering, largest mid-cauline, 28 mm. × 2 mm., reduced above, lanceolate, revolute, margin entire, tip acute; Inflorescence, cymose, single heads on short pedicels; Involucre, 6 mm. × 8 mm. wide; Phyllaries, 3+series, ±equal, 3 mm. × 0.4 mm. wide, imbricate, bases chartaceous, tips, green, acute, margins very lightly ciliate; Receptacle, convex, epaleate; Flowers of two kinds; Rays, fertile, corolla, 12 mm. × 0.7 mm. wide, white; Disk flowers, corolla, 3.3 mm., light yellow; Pappus, bristles, 3 mm.; Cypsela, 1 mm., sparsely hairy.

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        images/TAS012790Oview.jpg

Habitat of Coll. No. 1290, Symphyotrichum porteri

Photographed 9 September 2015.

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        images/IMGQ1624sm.jpg

Symphyotrichum spathulatum

Coll. No. 3089, Symphyotrichum spathulatum.

Photographed 3 January 2024.

Plants of Colorado
Asteraceae

Symphyotrichum spathulatum (Lindl.) G. L. Nesom.  Western Mountain Aster.

Salt Creek, Park County, Colorado. Terrace above Salt Creek, just off Forest Road 435 “Salt Creek Road,” 2.8 mi. by road west of US Highway 285, 111 km. southwest of Golden. 38.9572°N, 106.0044°W. WGS 1984 Elev. 2822 m. Dry, lightly shaded, terrace above the creek. Also collected here: Lappula occidentalis, Astragalus hallii, and seen: Dodecatheon pulchellum, and Iris missouriensis. Variety spathulatum, if infraspecific names are to be applied.

Collected by permit: Pike San Isabel National Forest, 2023, issued: Jul 1, 2023, to: Tom Schweich.

Tom Schweich 3089. 17-Jul-2023

Coll. No. 3089, 17 July 2023, characters observed: Perennial herb, 18 cm.; Stem, ascending, glabrate, pilose below heads, hairs multicellular with clear crosswalls, glandular immediately below head; Leaves, basal, petiole, 22 mm., blade, 40 mm. × 8 mm. wide, oblong / elliptical / oblanceolate, cauline, reduced, 33 mm. × 4 mm., sessile, linear-lanceolate, sparsely pilose, margins, entire, closely appressed ciliate; Inflorescence, 1-5 heads per stem; Phyllaries, in 3± series, chartaceous proximally, green distally, midvein green, tips, acute; Flowers, of 2 kinds; Ray flowers, tube 2 mm. + blade 9 mm. × 2 mm. wide, blue, fertile; Disk flowers, many, yellow; Pappus, in two series, very short hairs and well-developed bristles, pappus of ray and disk flowers alike.

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        images/IMGQ6029sm.jpg

Symphyotrichum spathulatum var. spathulatum, Coll. No. 498

Photograph taken August 2, 2007 beside Bohler Creek.

Coll. No. 498, 2 Aug 2007, characters observed: Perennial herb, to 40 cm.; Stem, becoming hairy distally, but never strigose; Leaves, basal and cauline, alternate, reduced above, lower leaf petiole 80 mm. + blade 70 mm. × 6 mm. wide, length 11.5 × width, lanceolate, glabrous, margins minutely dentate; Inflorescence, 3-13 heads (3,4,8,13 observed); Heads, flowers of two kinds; Peduncles, hairy, eglandular; Phyllaries in 2+ series, slightly overlapping, unequal, inner > outer, outer tip obtuse, ±herbaceous, margins scarious; Receptacles epaleate; Pappus of bristles, single series, #25-30, cylindric, short plumose; Rays, conspicuous, 13 mm., much exceeding disc flowers, lavender; Disc flower, style present.

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        images/IMGP2712sm.jpg

Collection No. 498, Symphyotrichum spathulatum var. spathulatum

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

Coll. No. 498, 2 Aug 2007, characters observed: Perennial herb, to 40 cm.; Stem, becoming hairy distally, but never strigose; Leaves, basal and cauline, alternate, reduced above, lower leaf petiole 80 mm. + blade 70 mm. × 6 mm. wide, length 11.5 × width, lanceolate, glabrous, margins minutely dentate; Inflorescence, 3-13 heads (3,4,8,13 observed); Heads, flowers of two kinds; Peduncles, hairy, eglandular; Phyllaries in 2+ series, slightly overlapping, unequal, inner > outer, outer tip obtuse, ±herbaceous, margins scarious; Receptacles epaleate; Pappus of bristles, single series, #25-30, cylindric, short plumose; Rays, conspicuous, 13 mm., much exceeding disc flowers, lavender; Disc flower, style present.

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        images/TAS004980det.jpg

Collection No. 715, Symphyotrichum spathulatum

Photograph taken 28 August 2010.

Same plant as Collection No. 708.

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        images/IMGP0860sm.jpg

Collection No. 715, Symphyotrichum spathulatum

Photograph taken 28 August 2010.

Same plant as Collection No. 708.

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        images/IMGP0844sm.jpg

Collection No. 498, Symphyotrichum spathulatum var. spathulatum

Scanned 13 March 2011. Background grid is 10 x 10 to the inch.

Coll. No. 498, 2 Aug 2007, characters observed: Perennial herb, to 40 cm.; Stem, becoming hairy distally, but never strigose; Leaves, basal and cauline, alternate, reduced above, lower leaf petiole 80 mm. + blade 70 mm. × 6 mm. wide, length 11.5 × width, lanceolate, glabrous, margins minutely dentate; Inflorescence, 3-13 heads (3,4,8,13 observed); Heads, flowers of two kinds; Peduncles, hairy, eglandular; Phyllaries in 2+ series, slightly overlapping, unequal, inner > outer, outer tip obtuse, ±herbaceous, margins scarious; Receptacles epaleate; Pappus of bristles, single series, #25-30, cylindric, short plumose; Rays, conspicuous, 13 mm., much exceeding disc flowers, lavender; Disc flower, style present.

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        images/TAS004980oview.jpg

Coll. No. 708, Symphyotrichum spathulatum var. spathulatum

Photographed 16 Nov 2011.

Coll. No. 708, 16 Nov 2011, characters observed while keying: Perennial from fibrous roots, generally < 4 dm tall (obs: 37-38 cm); Leaveslanceolate, > 7 x longer than wide (obs: 13 x longer), glabrous, without spinulose tip, basal present at flowering, mid-cauline leaves smaller than below; Peduncles 2-8 cm, non-glandular; Involucre 15 mm, non-glandular; Phyllaries in 3-4 series, graduated, outer < inner, not paper-like (chartaceous), lower margin scarious, elongate green tip 3x width, tip acute; Receptacle naked; Flowers both ray and disc; Rays conspicuous, blue/lavender; Style branches minutely glandular, not tufted hairy; Achenes with a pappus of bristles, whitish.

Article records that use this photograph:

  • Inyo National Forest Road 01S04A, Mono County, California: 10300.
  • Field Notes: Col. #708.

        images/TAS007080Oview.jpg

Coll. No. 724, Symphyotrichum spathulatum

Scanned 24 Oct 2011

Originally determined as Erigeron philadelphicus, but in Taylor's (2010) key, phyllaries in multiple series leds one away from Erigeron.

Characters observed while keying this collection: Perennial from fibrous roots and rhizomes, not thistle- like; generally > 4 dm tall (observed 3.5-4.5 dm); Stem pubesence uniform and sparse; Leaves basal withered at flowering, without spinulose tip; Peduncle not glandular; Involucre not glandular; Receptacle naked; Phyllaries in multiple series, could be >3; Outer phyllaries not chartaceous (paper-like) but could have scarious margins to half their length, elongate green area at tip, tip acuminate; Flowers not all ligulate; Ray flowers conspicuous, color violet or purple; Disk flowers style branches not tipped with tufted yellow hairs; Achenes with pappus of hairs.

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        images/TAS007240Oview.jpg

Syntrichopappus fremontii

Coll. No. 309, Syntrichopappus fremontii

Scanned 23 October 2013.

Coll. No. 309, 25 May 2003, characters observed while keying: Annual, tap-rooted, to 15 cm., generally tomentose throughout; Stem, decumbent to ascending; Leaves, alternate, 16 mm. × 3 mm. wide, tip 3-lobed; Inflorescence, solitary heads on peduncles (10 mm.), flowers of two kinds, radiate; Phyllaries, 5, in one series, free at base, 7.5 mm. × 2.5 mm. wide, margins slightly scarious, tip acuminate without tack-shaped gland; Receptacle, flat, epaleate; Ray flowers, 5, 5 mm., yellow; Pappus of bristles on both ray and disc flowers, single row, short plumose; cypsela, black, short plumose.

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        images/TAS003090Oview.jpg

Taraxacum officinale

My first collection on the Lippincott Property, Taraxacum officinale

Photographed 18 April 2019.

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        images/IMG50632sm.jpg

Coll. No. 1317, Taraxacum officinale on North Table Mountain Trail.

Photographed 22 April 2016.

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        images/IMGQ2393sm.jpg

Head of Coll. No. 1306, Taraxacum officinale

Scanned 16 July 2016.

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        images/TAS013060Head.jpg

Coll. No. 1306, Taraxacum officinale

Scanned 12 Jul 2016.

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        images/TAS013060Oview.jpg

Taraxacum sp.

Coll. No. 1305, Taraxacum, but T. officinale?

Scanned 16 July 2016

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        images/TAS013050Oview.jpg

Head of Coll. No. 1305, Taraxacum, but T. officinale?

Scanned 16 July 2016

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        images/TAS013050Head.jpg

Tetradymia canescens

Coll. No. 2190, Tetradymia canescens

Photographed 2 February 2020.

Plants of Colorado
Asteraceae

Tetradymia canescens DC.  Spineless Horsebush.

Trout Creek Pass, Chaffee County, Colorado. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. 38.908°N, 105.9888°W. WGS 1984 Elev. 2883 m. Collected with Hymenoxys richardsonii var. floribunda. A Western Cordilleran plant, also collected at Mono Lake, California.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2190. 5-Aug-2019

Coll. No. 2190, 5 August 2019, characters observed: Perennial, woody shrub, 15 cm.; Stem, tomentose, thinning in age; Leaves, cauline, alternate, 10 mm. × 2.6 mm. wide, tomentose, margin, entire, tip, acute; Inflorescence, head enclosed by an involucre, not overtopped by leaves; Peduncles, 10-12 mm.; Involucre, 8 mm. × 4 mm. wide, cylindric, tomentose, Phyllaries, #4 in 1 series (altho' it really looks to me like they are paired in vertical ranks), ±equal, 8 mm. × 2.7 mm. wide, tomentose, margins, flat, scarious; Receptacle, epaleate; Flowers, 1 kind; Disk flowers, #4, tube 7.5 mm. + lobes 3 mm., throat expanding above tube, yellow, glabrous; Pappus, well-developed bristles, 2 unequal series, 1 mm., 6.5 mm., plumose; Anthers, 3 mm., tailed; Style, 2-branched, tips, 0.2 mm. ±brush-like appendages; Stigma, 1 mm., > style appendages; Fruit (cypsela), 2 mm, hairy.

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        images/IMGQ5122sm.jpg

Inflorescence of Coll. No. 2190, Tetradymia canescens

Scanned 2 February 2020.

Plants of Colorado
Asteraceae

Tetradymia canescens DC.  Spineless Horsebush.

Trout Creek Pass, Chaffee County, Colorado. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. 38.908°N, 105.9888°W. WGS 1984 Elev. 2883 m. Collected with Hymenoxys richardsonii var. floribunda. A Western Cordilleran plant, also collected at Mono Lake, California.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2190. 5-Aug-2019

Coll. No. 2190, 5 August 2019, characters observed: Perennial, woody shrub, 15 cm.; Stem, tomentose, thinning in age; Leaves, cauline, alternate, 10 mm. × 2.6 mm. wide, tomentose, margin, entire, tip, acute; Inflorescence, head enclosed by an involucre, not overtopped by leaves; Peduncles, 10-12 mm.; Involucre, 8 mm. × 4 mm. wide, cylindric, tomentose, Phyllaries, #4 in 1 series (altho' it really looks to me like they are paired in vertical ranks), ±equal, 8 mm. × 2.7 mm. wide, tomentose, margins, flat, scarious; Receptacle, epaleate; Flowers, 1 kind; Disk flowers, #4, tube 7.5 mm. + lobes 3 mm., throat expanding above tube, yellow, glabrous; Pappus, well-developed bristles, 2 unequal series, 1 mm., 6.5 mm., plumose; Anthers, 3 mm., tailed; Style, 2-branched, tips, 0.2 mm. ±brush-like appendages; Stigma, 1 mm., > style appendages; Fruit (cypsela), 2 mm, hairy.

Article records that use this photograph:

        images/TAS021900Infl.jpg

Coll. No. 706, Tetradymia canescens

Scanned 15 Nov 2011.

Coll. No. 706, 15 Nov 2011, characters observed while keying: Perennial woody below; Stems some sharp-pointed, 2nd+ year stems pubesence interrupted by linear glabrescent streaks (Sect. Tetradymia, incl. stenolepis, canescens, and glabrata); Leaves gray tomentose (not green glabrous), not spiny; Phyllaries 4, in one equal series, not scarious or transparent, tips not black; Flowers not ligulate, yellow; Achenes glabrous, with a pappus of bristles.

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        images/TAS007060Oview.jpg

Coll. No. 1029, Tetradymia canescens

Photographed 24 July 2013.

Coll. No. 1029, 24 Jul 2013, characters observed while keying: Perennial shrub, to 1 m., unarmed; Leaves, distal only, lanceolate, 15 mm. × 2 mm. wide, entire tomentose; Involucre cylindric; Phyllaries, #4, 2-ranked, 9 mm., wooly; Receptacle epaleate; Heads, with only disc flowers (discoid); Disc flowers, 4; Corolla, 5-lobed, yellow; Pappus of many well-developed bristles.

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        images/IMG_1621sm.jpg

Tetradymia glabrata

Coll. No. 1168, Tetradymia glabrata

Scanned 2 November 2015.

Coll. No. 1168, 24 Jun 2015, characters observed: Perennial woody shrub, to 1 m., drying quite brittle; Stems, pubescence of stems interrupted by glabrescent streaks; Leaves, eglandular, primary leaf an appressed thorn, 4.5 mm., early deciduous, secondary leaves clustered in axils, 5.0 mm. × 0.8 mm. wide, linear to oblanceolate; Inflorescence, 7-8 heads on ends of short branches, none of flowers with strap-shaped corollas, flowers of one kind (disk flowers); Peduncle, 5.5-6.0 mm., tomentose; Involucre, cylindric; Phyllaries, #4, in 1 series, 6 mm., ±keeled, tomentose abaxially; Receptacle, epaleate; Flowers, #4; Corolla, yellow; Pappus of many well-developed bristles; Fruit, long soft hairy;

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        images/TAS011680Oview.jpg

Stem of Coll. No. 1168, Tetradymia glabrata

Scanned 2 November 2015.

Things to see in this image:

  1. Primary leaves are altered to appressed spines, even though plant is described as unarmed.
  2. The tomentose pubescence on the stems is interrupted by glabrescent streaks.

Coll. No. 1168, 24 Jun 2015, characters observed: Perennial woody shrub, to 1 m., drying quite brittle; Stems, pubescence of stems interrupted by glabrescent streaks; Leaves, eglandular, primary leaf an appressed thorn, 4.5 mm., early deciduous, secondary leaves clustered in axils, 5.0 mm. × 0.8 mm. wide, linear to oblanceolate; Inflorescence, 7-8 heads on ends of short branches, none of flowers with strap-shaped corollas, flowers of one kind (disk flowers); Peduncle, 5.5-6.0 mm., tomentose; Involucre, cylindric; Phyllaries, #4, in 1 series, 6 mm., ±keeled, tomentose abaxially; Receptacle, epaleate; Flowers, #4; Corolla, yellow; Pappus of many well-developed bristles; Fruit, long soft hairy;

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        images/TAS011680Stem.jpg

Coll. No. 2268, Tetradymia glabrata

Photographed 24 June 2015.

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        images/IMGQ1119sm.jpg

Habitat of Coll. No. 2268, Tetradymia glabrata

Photographed 24 June 2015.

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        images/IMGQ1106sm.jpg

Tetradymia tetrameres

Habitat of Tetradymia tetrameres north of Mono Lake.

Photograph taken on a rainy Sunday afternoon 30 August 2010.

This location is on California Highway 167, 4.2 miles east of US Highway 395, in a stabilized dune field on the north shore of Pleistocene Lake Mono. Dechambeau Ranch is in the middle distance and Black Point is behind that.

Article records that use this photograph:

        images/IMG_1364sm.jpg

Habitat of Tetradymia tetrameres north of Mono Lake.

Photograph taken on a rainy Sunday afternoon 30 August 2010.

This location is on California Highway 167, 4.2 miles east of US Highway 395, in a stabilized dune field on the north shore of Pleistocene Lake Mono. The Tetradymia is the white shrub with a little yellow on top. The sharp break in slope in the distance is a shoreline of Pleistocene Lake Mono.

Article records that use this photograph:

        images/IMG_1365sm.jpg

Habit of Tetradymia tetrameres north of Mono Lake.

Photograph taken on a rainy Sunday afternoon 30 August 2010.

This location is on California Highway 167, 4.2 miles east of US Highway 395, in a stabilized dune field on the north shore of Pleistocene Lake Mono.

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        images/IMG_1366sm.jpg

Overview of Coll. No. 720, Tetradymia tetrameres

Scanned 19 Oct 2011.

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        images/TAS007200Oview.jpg

Tetraneuris acaulis arizonica

Collection No. 543, Tetraneuris acaulis var. arizonica on Cedar Mountain.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005430fl.jpg

Collection No. 543, Tetraneuris acaulis var. arizonica on Cedar Mountain.

Grid is 10x10 to the inch.

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        images/TAS005430oview.jpg

Coll. No. 536, Tetraneuris acaulis var. arizonica

Grid is 10x10 to the inch.

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        images/TAS005360det.jpg

Coll. No. 536, Tetraneuris acaulis var. arizonica

Grid is 10x10 to the inch.

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        images/TAS005360oview.jpg

Coll. No. 536, Tetraneuris acaulis var. arizonica

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005360fl.jpg

Thelesperma megapotamicum

Head of Thelesperma megapotamicum

Photographed 3 December 2006. Carlos Pas (Cordoba Province, Argentina) Copyright 2007 Zoya Akulova. https://calphotos.berkeley.edu/cgi/img_query?enlarge=0000+0000+0307+1112

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Thelesperma megapotamicum.

        images/280Themeg_2007_Zoya_Akulova_CR.jpg

Tea made from Thelesperma megapotamicum

Photographed 17 June 2018.

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Thelesperma megapotamicum.

        images/20180617_081324sm.jpg

Coll. No. 1707, Thelesperma megapotamicum

Photographed 30 December 2017.

Location records that use this photograph:

Article records that use this photograph:

        images/IMGQ4513sm.jpg

Coll. No. 1483, Thelesperma megapotamicum

Scanned 1 January 2017.

Coll. No. 1483, 6 Jul 2016, characters observed: Perennial herb, to 55 cm., woody at base, glabrous, eglandular; Leaves, opposite, pinnately lobed, lobes filiform, 30-35 mm.; Inflorescence, 1-3 heads per stem on 10 cm. peduncles; Phyllaries, 2 dimorphic series, without bristles or spines, outer, 2 mm. × 1.3 mm. wide, spreading, inner, 8 mm. × 3 mm. wide, connate 4.7 mm, tips erect; Receptacle, paleate, flat; Paleae, 7 mm. × 2 mm. wide, mid-vein greenish-brown, otherwise chartaceous; Flowers of 1 kind; Disc flowers, corolla, tube 3 mm. + throat 1 mm. + lobes 2 mm., color yellow with red-brown veins; Pappus, 2 retrorsely barbed awns; Cypsela, 3.8 mm.

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Townsendia exscapa

Hooker (1834), Tab. CXIX, Townsendia exscapa

Downloaded from Biodoversity Heritage Library, 2 August 2021.

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Townsendia exscapa at Fort Union.

Photographed 26 April 2021.

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Townsendia grandiflora

Townsendia grandiflora along the Lubahn Trail.

Photographed 7 July 2023.

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Involucre of Coll. No. 2292, Townsendia grandiflora

Scanned 9 November 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Townsendia grandiflora Nutt.  Largeflower Townsend Daisy.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.66 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5579°N, 105.1407°W. WGS 1984 Elev. 1835 m. Stiff sandstone-derived soil below cliffs, nearly bare of vegetation. Nearby: Quercus gambelii, Cryptantha virgata, Lappula occidentalis, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2292. 20-May-2020

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Townsendia grandiflora in bud.

Photographed 15 May 2020, in Kinney Run.

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        images/20200515_095225sm.jpg

Coll. No. 1927, Townsendia grandiflora

Photographed 9 December 2018.

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        images/IMGQ4802sm.jpg

Coll. No. 1247, Townsendia grandiflora

Scanned 21 December 2015.

Coll. No. 1247, 24 Jul 2015, characters observed: Perennial herb, to 15 cm.; Stem, hairs appressed; Leaves, opposite below, alternate above, 32 mm. × 3 mm. wide, long ciliate at base; Inflorescence, heads borne singly; Phyllaries, 5+ imbricate series, 13 mm. × 2.5 mm. wide, ovate, margin ciliate, tip acuminate, green around prominent mid-vein, chartaceous margins; Receptacle, flat, epaleate, very short bristles; Flowers of two kinds; Rays, sterile, pappus, scales, 0.6 mm., corolla, 14 mm. × 1.5 mm. wide, white; Disk, 14 mm. wide, pappus, bristles, 4.0 mm., corolla, 4.5 mm., yellow; cypsela, 4 mm. × 1.3 mm., flattened.

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        images/TAS012470Oview.jpg

Habitat of Coll. No. 1247, Townsendia grandiflora, between two Mountain Mahogany.

Photographed 24 July 2015.

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        images/IMGQ1346sm.jpg

Coll. No. 1247, Townsendia grandiflora

Photographed 24 July 2015.

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Partially dissected head of Coll. No. 1404, Townsendia grandiflora

Scanned 3 December 2016.

Perennial herb, to 15 cm.; Stem, villous; Leaves, opposite below, alternate above, 32-43 mm. × 3 mm. wide, narrowly oblanceolate, long ciliate at base; Inflorescence, heads borne singly; Involucre, 12 mm. × 25 mm. wide; Phyllaries, 5+ imbricate series, 13 mm. × 2.5-3.0 mm. wide, ±equal, ovate, margin ciliate, tip acuminate, green around prominent mid-vein, chartaceous margins; Receptacle, flat, epaleate, very short bristles; Flowers of two kinds; Rays, sterile, pappus, scales, 0.6 mm., corolla, 14-21 mm. × 1.2-1.5 mm. wide, white with purple center; Disk, 14-21 mm. wide, pappus, bristles, 4.0 mm., corolla, 4.5-5.0 mm., yellow; cypsela, 4 mm. × 1.3 mm., laterally compressed.

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        images/TAS014040Hd.jpg

Townsendia hookeri

Hooker's Easter Daisy (Townsendia hookeri just starting to bloom in the survey field.

Photographed 7 April 2020.

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Coll. No. 2251, Townsendia hookeri, ray fruit (left) and disk fruit (right).

Scanned 3 July 2020.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Townsendia hookeri Beaman.  Hooker's Townsend Daisy.

Deadman Gulch, Jefferson County, Colorado. High plains at the base of the Rocky Mountain Front Range, linear northwest trending dry gravelly area, either in a trace of the Golden Fault or adjacent to it, 3.15 km. south of the GNIS location of Golden. 39.734°N, 105.217°W. WGS 1984 Elev. 1818 m. The type locality of T. hookeri is Mount Vernon Canyon, about 5 km. south. Also collected here: Packera plattensis, Euphorbia brachycera, and Ipomopsis spicata.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2251. 27-Apr-2020

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        images/TAS022510Fr.jpg

Townsendia hookeri (?) on top of small hill.

Photographed 12 April 2024. Only saw this one and another very small cluster on this hill.

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Coll. No. 1087, Townsendia hookeri

Scanned 16 June 2015.

Coll. No. 1087, 25 Apr 2015, characters observed: Low growing perennial, from a woody caudex, to 2.5 cm.; Leaves, linear, 30 mm. × 1.2 mm. wide, appressed hairy, eglandular; Peduncle, 3 mm., spreading hairy, eglandular; Heads, solitary, disc 15-20 mm. wide; Phyllaries in 3+ overlapping series, 8 mm. × 1.2 mm. wide, all same length but inner phyllaries attached higher on receptacle giving impression of inner > outer, green, margin scarious and ciliate, tips acute and ciliate but not obviously tangled; Receptacle epaleate, flat; Ray flowers, fertile (pistillate), cypsela 3.3 mm., tuft of glandular hairs at base, pappus of 1 series white bristles, 4 mm., corolla, 11 mm., lavender; Disc flowers, bisexual, cypsela, 3.7 mm., glandular hairy, pappus 1 series white bristles, 4 mm., corolla, 3.8 mm., yellow, lobes dark.

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Coll. No. 1071, Townsendia hookeri

Photographed 12 March 2015.

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Coll. No. 1087, Townsendia hookeri

Photographed 25 April 2015.

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Tragopogon dubius

Coll. No. 1115, Tragopogon dubius

Photographed 28 May 2015.

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        images/IMGQ0604sm.jpg

Verbesina encelioides

Coll. No. 1539, Verbesina encelioides

Photographed 20 January 2017.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain at the fenceline of the Williams parcel, 0.88 km. southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.7 km. north northeast of the GNIS location of Golden. 39.796°N, 105.2054°W. WGS 1984. Elev. 1840 m. On edge of private horse pasture.

Coll. No. 1539, 18 August 2016, characters observed: Annual/perennial not observed, but described as annual; Stem, densely strigose; Leaves, cauline, alternate, petiole 48 mm. + blade 80 mm. × 40 mm. wide, reduced above, lanceolate, margin coarsely toothed, adaxial sparsely strigose, abaxial densely strigose; Heads, 7 mm. × 13 mm. wide, borne singly, on peduncles 6-43 mm.; Phyllaries, 1 series, 7 mm. × 1.5 mm. wide, strigose abaxially; Receptacle, conical, paleate; Flowers, 2 kinds, Rays, #12, tube 2 mm. + laminae 15 mm. × 4.5 mm. wide, yellow, sterile; Disk flowers, corolla, 3.5 mm., yellow; Pappus, [2 awns,] 1 mm.; Cypsela, 3.5 mm., strigose.

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Wyethia mollis

Coll. No. 850, Wyethia mollis

Photographed 29 June 2012.

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        images/IMG_1522sm.jpg

Habitat of Coll. No. 850 Wyethia mollis

Photographed 21 June 2012.

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Xanthisma spinulosum

Coll. No. 2438, Xanthisma spinulosum

Photographed 28 August 2020.

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        images/20200828_101351sm.jpg

Detail of Coll. No. 2434, Xanthisma spinulosum

Scanned 19 August 2020.

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        images/TAS024340X1200Det.jpg

Coll. No. 2434, Xanthisma spinulosum

Scanned 19 August 2020.

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        images/TAS024340Oview.jpg

Xylorhiza tortifolia

Coll. No. 1583, Xylorhiza tortifolia

Photographed 3 November 2017.

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        images/IMGQ4452sm.jpg

Xylorhiza tortifolia tortifolia

Coll. No. 342, Xylorhiza tortifolia var. tortifolia

Scanned 24 October 2013.

Coll. No. 342, 20 April 2004, characters observed while keying:

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Date and time this article was prepared: 4/27/2024 3:36:33 PM