Eastern Mojave Vegetation
Images -- Species - Onagraceae

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.

Would you like to use these photographs in your school term paper or report?

License is hereby granted for non-commercial use of the images contained herein provided that the images are reproduced with the copyright notice intact. This means that we give you our permission to use the photographs and information you find here in your school term papers and reports. You may resize the photograph to fit your needs, but you may not remove the copyright. Your term paper should note that the photographs are reproduced with permission and it should have a reference to this web site, such as:

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Coll. No. 792.1

Scanned 29 Dec 2011.

Article records that use this photograph:

        images/TAS007921Oview.jpg

Calylophus lavandulifolius

Collection No. 541, Calylophus lavandulifolius, in Wimmer Flat, San Rafael Swell, Utah.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005410fl.jpg

Collection No. 541, Calylophus lavandulifolius, in Wimmer Flat, San Rafael Swell, Utah.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005410oview.jpg

Collection No. 541, Calylophus lavandulifolius, in Wimmer Flat, San Rafael Swell, Utah.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005410bud.jpg

Collection No. 541, Calylophus lavandulifolius, in Wimmer Flat, San Rafael Swell, Utah.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005410pollen.jpg

Collection No. 541, Calylophus lavandulifolius, in Wimmer Flat, San Rafael Swell, Utah.

Grid is 10x10 to the inch.

Article records that use this photograph:

        images/TAS005410lvs.jpg

Coll. No. 541, Calylophus lavandulifolius

Scanned 11 December 2012.

Article records that use this photograph:

        images/TAS005410Oview2.jpg

Camissonia

Sun Cup (Camissonia sp.) in the Mesquite Mountains.

Photograph taken 20 April 2005, in the Mesquite Mountains, about 800 meters northeast of Winters Pass. This may be the same species as my collection number 447, but I need to check.

Article records that use this photograph:

        images/IMGP1045sm.jpg

Camissonia boothii boothii

Collection No. 526, Camissonia boothii ssp. boothii

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

Article records that use this photograph:

        images/TAS005260oview.jpg

Collection No. 526, Camissonia boothii ssp. boothii

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

Article records that use this photograph:

        images/TAS005260det.jpg

Camissonia brevipes brevipes

Scan of buds in Camissonia brevipes ssp. brevipes

Scanned at 1200 dpi. Area shown is 16 mm by 12 mm.

The concept illustrated by this image is "sepal tips in bud free and subterminal." The only other desert species of Camissonia that has sepal tips in bud free and subterminal is C. claviformis ssp. claviformis and ssp. peirsonii. However that species and subspecies tend to open at dusk, rather than mid-day.

Article records that use this photograph:

        images/TAS003640.jpg

Whole Collection No. 364, Camissonia brevipes ssp. brevipes

Scanned at 96 dpi. Area shown is 90 mm wide by 229 mm high.

Article records that use this photograph:

        images/TAS003640Whole.jpg

Camissonia cespitosa marginata

Coll. No. 760, Camissonia cespitosa var. marginata

Scanned 18 Jan 2012.

Coll. No. 760, 18 Jan 2012, characters observed while keying: Perennial, to 10 cm.; Buds erect (not nodding); Petals 4, 25 mm., white, fading to red-purple; Stamens 8; Stigma 4; Fruit 25 mm., stalk-like base absent, slightly s-shaped, weakly ovate (not appearing cylindric); Seed 2 mm., cavity margin entire.

Article records that use this photograph:

        images/TAS007600Oview.jpg

Camissonia parvula

Coll. No. 759, Camissonia parvula

Scanned 17 Jan 2012.

Coll. No. 759, 18 Jan 2012, characters observed while keying: Annual rosette not present; Leaf linear, to 2 cm., margin wavy to lightly dentate; Infloresence nodding; Sepals 3 (3.5) mm., separating at anthesis, not joined at tip; Petals 4, yellow, 4 mm x 2 mm wide; Anthers extend to base of stigma (TJDM & TJM2 keys state anthers surround stigma, but I don't see them that high); Style 2 mm.; Stigma spheric,to 1.5 mm dia.; and Capsule sessile.

Article records that use this photograph:

        images/TAS007590Oview.jpg

Coll. No. 759, Camissonia parvula

Scanned 17 Jan 2012.

Coll. No. 759, 18 Jan 2012, characters observed while keying: Annual rosette not present; Leaf linear, to 2 cm., margin wavy to lightly dentate; Infloresence nodding; Sepals 3 (3.5) mm., separating at anthesis, not joined at tip; Petals 4, yellow, 4 mm x 2 mm wide; Anthers extend to base of stigma (TJDM & TJM2 keys state anthers surround stigma, but I don't see them that high); Style 2 mm.; Stigma spheric,to 1.5 mm dia.; and Capsule sessile.

Article records that use this photograph:

        images/TAS007590Det.jpg

Camissonia pubens

Coll. No. 429, Camissonia pubens

Scanned 12 December 2012.

Article records that use this photograph:

        images/TAS004290Oview.jpg

Camissonia tanacetifolia

Coll. No. 561, Taraxia tanacetifolia

(Syn: Camissonia tanacetifolia (Torr. & A. Gray) P. H. Raven ssp. tanacetifolia)

Article records that use this photograph:

        images/TAS005610oview.jpg

Coll. No. 561, Taraxia tanacetifolia

(Syn: Camissonia tanacetifolia (Torr. & A. Gray) P. H. Raven ssp. tanacetifolia)

Article records that use this photograph:

        images/TAS005610det.jpg

Chamerion angustifolium

Coll. No. 2640, Chamerion angustifolium.

Photographed 23 January 2022.

Plants of Colorado
Onagraceae

Chamerion angustifolium (L.) Holub.  Fireweed.

Morrison Creek, Jefferson County, Colorado. Buffalo Creek Recreation Area, along Morrison Creek and former National Forest Road 547, 2.69 km. south of National Forest Road 550, 63.3 km. south of the GNIS location of Golden. 39.3198°N, 105.2836°W. WGS 1984 Elev. 2454 m. Open shade under Douglas fir. Forest is generally more open here, and there is a meadow nearby. Also collected here: Equisetum arvense and Aconitum columbianum

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

Tom Schweich 2640. 5-Aug-2021

Article records that use this photograph:

        images/IMGQ5557sm.jpg

Chylismia claviformis

Coll. No. 1584, Chylismia claviformis

Scanned 3 November 2017.

Article records that use this photograph:

        images/TAS015840Oview.jpg

Coll. No. 447, Chylismia claviformis

Scanned 11 December 2012.

Article records that use this photograph:

        images/TAS004470Oview.jpg

Chylismia claviformis × brevipes

Coll. No. 447, Chylismia claviformis x brevipes, from the Mesquite Mountains

Scanned 22-Jan-06.

Article records that use this photograph:

        images/TAS004470.jpg

Coll. No. 447, Chylismia claviformis x brevipes, from the Mesquite Mountains

Scanned 22-Jan-06.

Article records that use this photograph:

        images/TAS004470det.jpg

Circaea alpina

Coll. No. 2628.1, Circaea alpina

Photographed 20 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Onagraceae

Circaea alpina L.  Small Enchanter's Nightshade.

Spring Brook, Boulder County, Colorado. North part of Lippincott Ranch in Boulder County, on the south bank of Spring Brook, 2.38 km. north northwest of the main gate, 24.0 km. north northwest of the GNIS location of Golden. 39.9149°N, 105.2802°W. WGS 1984 Elev. 2065 m. In deep shade of Spring Brook. 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 2628.1 20-Jul-2021

Article records that use this photograph:

        images/IMGQ5550sm.jpg

Coll. No. 3081, Circaea alpina.

Photographed 12 July 2023.

Article records that use this photograph:

        images/20230712_110832sm.jpg

Clarkia unguiculata

Coll. No. 131, Clarkia unguiculata

Scanned 13 December 2012.

Article records that use this photograph:

        images/TAS001310Oview.jpg

Epilobium

Coll. No. 2561.1, Epilobium sp.

Scanned 29 November 2021.

Article records that use this photograph:

        images/TAS025611Oview.jpg

Coll. No. 841, Epilobium sp.

Scanned 19 February 2013. Probably Epilobium ciliatum, but no flowers or fruit.

Location records that use this photograph:

Article records that use this photograph:

        images/TAS008410Oview.jpg

Epilobium brachycarpum

Coll. No. 1040, Epilobium brachycarpum

Scanned 15 Sep 2013.

Article records that use this photograph:

        images/TAS010400Parts.jpg

Coll. No. 1286.1, Epilobium brachycarpum

Scanned 16 January 2016.

Article records that use this photograph:

        images/TAS012861Oview.jpg

Epilobium canum

Epilobium canun in my garden.

        images/DSCN0104.jpg

Epilobium ciliatum

Coll. No. 2008, Epilobium ciliatum

Photographed 27 January 2019.

Article records that use this photograph:

        images/IMGQ4864sm.jpg

Coll. No. 690.1, Epilobium ciliatum

Scanned 8 Nov 2011.

Coll. No. 690.1, 8 Nov 2011, characters observed while keying: Annual, to 1 dm, glabrous, not tap-rooted; Leaves basal 0, cauline opposite, to 3 cm, 1 cm wide, not reduced above; Ovary inferior; Hypanthium, ±1 mm. (measured from ovary tip? to sepal base); Sepals 4, 3 mm; Petals 4, white to rose; Stamens 2 × 4 = 8, unequal; Stigma entire.

Article records that use this photograph:

        images/TAS006901Oview.jpg

Coll. No. 690.1, Epilobium ciliatum

Photographed 15 Nov 2011.

Coll. No. 690.1, 8 Nov 2011, characters observed while keying: Annual, to 1 dm, glabrous, not tap-rooted; Leaves basal 0, cauline opposite, to 3 cm, 1 cm wide, not reduced above; Ovary inferior; Hypanthium, ±1 mm. (measured from ovary tip? to sepal base); Sepals 4, 3 mm; Petals 4, white to rose; Stamens 2 × 4 = 8, unequal; Stigma entire.

Article records that use this photograph:

        images/IMGQ1042sm.jpg

Coll. No. 1186, Epilobium sp., probably E. ciliatum

Scanned 10 November 2015.

Article records that use this photograph:

        images/TAS011860Oview.jpg

Coll. No. 690.1, Epilobium ciliatum

Scanned 8 Nov 2011.

Coll. No. 690.1, 8 Nov 2011, characters observed while keying: Annual, to 1 dm, glabrous, not tap-rooted; Leaves basal 0, cauline opposite, to 3 cm, 1 cm wide, not reduced above; Ovary inferior; Hypanthium, ±1 mm. (measured from ovary tip? to sepal base); Sepals 4, 3 mm; Petals 4, white to rose; Stamens 2 x 4 = 8, unequal; Stigma entire.

Article records that use this photograph:

        images/TAS006901Det.jpg

Coll. No. 690.1, Epilobium ciliatum

Scanned 8 Nov 2011.

Coll. No. 690.1, 8 Nov 2011, characters observed while keying: Annual, to 1 dm, glabrous, not tap-rooted; Leaves basal 0, cauline opposite, to 3 cm, 1 cm wide, not reduced above; Ovary inferior; Hypanthium, ±1 mm. (measured from ovary tip? to sepal base); Sepals 4, 3 mm; Petals 4, white to rose; Stamens 2 × 4 = 8, unequal; Stigma entire.

Article records that use this photograph:

        images/TAS006901Dis.jpg

Epilobium ciliatum ciliatum

Collection No. 511, Epilobium ciliatum var. ciliatum

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

Article records that use this photograph:

        images/TAS005110oview.jpg

Coll. No. 848, Epilobium ciliatum var. ciliatum

Scanned 27 Jun 2013.

Location records that use this photograph:

Article records that use this photograph:

        images/TAS008480Oview.jpg

Epilobium hirsutum

Hairy Willow Herb (Epilobium hirsutum) in Deadman Gulch.

Photographed 23 August 2020.

Hairy Willow Herb (Epilobium hirsutum) is the white patches in the gulch.

Location records that use this photograph:

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Epilobium hirsutum.
  • Field Notes: 23 Aug 2020.

        images/20200823_105046sm.jpg

Epilobium hirsutum in fall after being sprayed.

Photographed 13 September 2018.

Article records that use this photograph:

        images/20230913_095522sm.jpg

Epilobium hirsutum in early spring.

Photographed 8 May 2021.

Article records that use this photograph:

        images/IMGQ5369sm.jpg

More Hairy Willowherb in Tucker Gulch near Clear Creek.

Photographed 14 September 2020.

Location records that use this photograph:

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        images/20200914_110835sm.jpg

Hairy Willowherb in Tucker Gulch between 10th and Water Streets

Photographed 14 September 2020.

Location records that use this photograph:

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Coll. No. 2685, Epilobium hirsutum

Photographed 13 August 2021.

Article records that use this photograph:

        images/20210813_103632sm.jpg

Hairy Willowherb in Tucker Gulch above 10th Street

Photographed 14 September 2020.

Location records that use this photograph:

Article records that use this photograph:

        images/20200914_110433sm.jpg

Hairy Willow Herb (Epilobium hirsutum) in Deadman Gulch.

Photographed 23 August 2020.

Location records that use this photograph:

Article records that use this photograph:

  • Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Epilobium hirsutum.
  • Field Notes: 23 Aug 2020.

        images/20200823_092259sm.jpg

Infestation of Epilobium hirsutum in Deadman Gulch.

Photographed 4 September 2024.

Location records that use this photograph:

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        images/20240904_100042sm.jpg

Hairy Willow Herb in Kinney Run.

Photographed 30 March 2023.

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        images/20230330_100459sm.jpg

Coll. No. 2685, Epilobium hirsutum

Photographed 13 August 2021.

Article records that use this photograph:

        images/20210813_090133sm.jpg

Flowers of Epilobium hirsutum and fruit of Solanum dulcamara.

Photographed 4 September 2024.

Location records that use this photograph:

Article records that use this photograph:

        images/20240904_100036sm.jpg

Coll. No. 2380, Epilobium hirsutum

Photographed 12 July 2020.

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        images/20200712_104204sm.jpg

Epilobium septentrionale

Epilobium septentrionale in my garden.

        images/DSCN0100.jpg

Eremothera boothii intermedia

Coll. No. 386, Eremothera boothii ssp. intermedia

Photograph taken May 25, 2004.

Article records that use this photograph:

        images/IMGP0550sm.jpg

Coll. No. 386, Eremothera boothii ssp. intermedia

Scanned 12 December 2012.

Article records that use this photograph:

        images/TAS003860Oview.jpg

Habitat of Coll. No. 1178, Eremothera boothii ssp. intermedia

Photographed 25 June 2015.

Location records that use this photograph:

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        images/IMGQ1169sm.jpg

Coll. No. 1178, Eremothera boothii ssp. intermedia

Scanned 5 November 2015.

Article records that use this photograph:

        images/TAS011780Oview.jpg

Coll. No. 1178, Eremothera boothii ssp. intermedia

Scanned 6 November 2015.

Article records that use this photograph:

        images/TAS011780Oview2.jpg

Gayophytum decipiens

Coll. No. 2590.1, Gayophytum decipiens

Scanned 12 December 2021.

Plants of Colorado
Onagraceae

Gayophytum decipiens H. Lewis & Szweyk.  Deceptive Groundsmoke.

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. 39.3521°N, 106.3655°W. WGS 1984 Elev. 3225 m. Lowest flower at 2nd node above base, pedicels very short. Dry rocky opening in lodgepole pine forest. One of six little annuals collected here, others are Androsace septentrionalis, Collomia linearis, and Spergularia rubra.

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

Tom Schweich 2590.1 13-Jul-2021

Article records that use this photograph:

        images/TAS025901Oview.jpg

Gayophytum ramosissimum

Coll. No. 3087, Gayophytum ramosissimum.

Photographed 1 January 2024.

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

Gayophytum ramosissimum Torr. & A. Gray.  Pinyon Groundsmoke.

Guy Gulch, Jefferson County, Colorado. Mouth of a small forested gulch tributary to Guy Gulch, 140 m. southwest across County Road 70 from the Centennial Ranch house, 2.55 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. 39.7936°N, 105.3547°W. WGS 1984 Elev. 2348 m. Annuals found on dry soil, top of gopher mounds.

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

Tom Schweich, with Cindy Trujillo 3088. 12-Jul-2023

Article records that use this photograph:

        images/IMGQ6028sm.jpg

Gaytophytum diffusum parviflorum

Gaytophytum diffusum var.parviflorum, Collection No.

Article records that use this photograph:

        images/IMGP0174sm.jpg

Collection No. 505, Gaytophytum diffusum var. parviflorum

Scanned 15 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS005050oview.jpg

Oenothera biennis

Coll. No. 3072, Oenothera biennis.

Photographed 29 December 2023.

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

Oenothera biennis L.  King's-Cureall.

Guy Gulch, Jefferson County, Colorado. Around the base of a willow in a former meander of the creek, 125 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. 39.7948°N, 105.3553°W. WGS 1984 Elev. 2348 m. Collection is halved infloresence plus basal leaves; not much material to work with. Placed in O. biennis on the strength of long hairs and short glandular hairs on the ovary, but see Ackerfield (2022) note regarding presence of O. biennis in Colorado.

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

Tom Schweich, with John Vickery 3072. 12-Jul-2023

Article records that use this photograph:

        images/IMGQ6019sm.jpg

Coll. No. 2416, Oenothera biennis

Scanned 2 December 2020.

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

Oenothera biennis L.  King's-Cureall.

Deadman Gulch, Jefferson County, Colorado. Stonebridge HOA-owned open space between Mourning Dove Lane and Blue Jay Drive, above Eagle Ridge Drive and below Jefferson County Open Space Apex Park, 4.12 km. south of the GNIS location of Golden. 39.7271°N, 105.2198°W. WGS 1984 Elev. 1850 m. Hairs lacking red pustular bases. Mixed foothils shrubland and grassland. Collected during CNHP survey of Stonebridge HOA open space contracted by Stewards of Golden Open Space.

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

Tom Schweich, with Susan Panjabi and Zachariah Wilson 2416. 11-Aug-2020

Coll. No. 2416, 11 Aug 2020, characters observed: Perennial (biennial?), to 60 cm., hairy throughout, hairs lacking red pustular bases; Stem, leafy; Leaves, basal, unknown, cauline, 90-115 mm. × 23-35 mm., elliptic to falcate, margin shallowly dentate, tip acute; Sepals, 11 mm., spreading to reflexed in maturity, tips barely free in bud; Flowers, solitary in leafy bracteate spike, petals, 10 mm., obovate, yellow, fading both orange and pink; Stigma, 4-lobed; Capsules, 17-21 mm., not mature;

Article records that use this photograph:

        images/TAS024160Oviewsm.jpg

Oenothera californica avita

California Evening Primrose in Mid Hills Campground

Photograph taken April 21, 2004. Oenothera californica ssp. avita

Article records that use this photograph:

        images/IMGP0404sm.jpg

Collection No. 162, Oenothera californica ssp. avita

Grid is 10x10 to the inch.

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        images/TAS001620oview.jpg

Oenothera cespitosa

Oenothera cespitosa at Rock Spring.

Photographed in April 1981, scanned from a slide in 2023.

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        images/1981-04-3-10-img296sm.jpg

Sims, No. 1593, Oenothera caespitosa.

From Curtis's Botanical Magazine.

Article records that use this photograph:

        images/Sims1814-1593_Oenothera_cespitosa 3.jpg

Oenothera cespitosa macroglottis

Coll. No. 2868, Oenothera cespitosa ssp. macroglottis.

Photographed 24 November 2022.

Plants of Colorado
Onagraceae

Oenothera cespitosa Nutt. ssp. macroglottis (Rydb.) W.L. Wagner.  Tufted Evening Primrose.

Salt Creek, Park County, Colorado. Along the recently closed Forest Road 435A, about 150 m. east of it's junction with Forest Road 435 “Salt Creek Road,” 6.80 km. northwest of Antero Junction, 21.7 km. northeast of Buena Vista. 38.958°N, 106.0067°W. WGS 1984 Elev. 2828 m. Flowers closed.

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

Tom Schweich 2868. 18-Jul-2022

Article records that use this photograph:

        images/IMGQ5748sm.jpg

Coll. No. 2971, Oenothera cespitosa ssp. macroglottis

Photographed 27 November 2023.

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

Oenothera cespitosa Nutt. ssp. macroglottis (Rydb.) W.L. Wagner.  Tufted Evening Primrose.

Guy Gulch, Jefferson County, Colorado. Steep slope above Guy Gulch, southwest side of the creek and County Road 70, 406 m. south southeast of the ranch house, 15.6 km. (planar) northwest of the GNIS location of Golden. 39.7922°N, 105.3527°W. WGS 1984 Elev. 2346 m. Flowers white, fading pink. Steep rocky hillside, below a rock outcrop and an Acer glabrum

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

Tom Schweich, with John Vickery 2971. 14-Jun-2023

Article records that use this photograph:

        images/IMGQ5960sm.jpg

Coll. No. 1407, Oenothera cespitosa var. macroglottis

Scanned 3 December 2016.

Coll. No. 1407, 8 Jun 2016, characters observed: Perennial herb, to 20 cm., glabrous, except as noted; Stem, short, to 4 cm., but definitely there; Leaves, petiole, 90 mm., blade, 90 mm. × 28 mm. wide, oblanceolate, margin toothed, straight hairy; Buds, sparsely hairy on veins; Flowers, solitary in axils, floral tube 100 mm., petals, 37 mm., yellowish, most drying purplish; Stigma, 4-lobed; Capsule, 27 mm. × 5 mm. wide, valve ridges not tuberculate.

The leaves are toothed and not deeply lobed or deeply toothed, and there are no tubercules on the valve ridges of the capsules. Therefore, I am using var. macroglottis rather than var. marginata.

Article records that use this photograph:

        images/TAS014070Oview.jpg

Oenothera cespitosa marginata

Two evening primroses growing together along Goat Ranch Cutoff

Photograph taken 19 June 2011.

The larger white evening primrose is Oenothera cespitosa var. marginata and the smaller yellow one just to its right is Camissonia parvula.

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Coll. No. 1166, Oenothera cespitosa ssp. marginata

Scanned 31 October 2015.

Coll. No. 1166, 24 Jun 2015, characters observed: Caespitose annual or short-lived perennial herb, to 10 cm.; Leaves, mostly basal, petiole 44 mm. + blade 33 mm. × 14 mm. wide, ovate, margins entire and toothed; Buds erect; Corolla, 32 mm., limb 56 mm., white, fading lavender; Anthers versatile, attached in middle; Pollen, with viscin threads; Stigma, lobes, 4; Fruit, unknown, fortunately not necessary to key in Taylor (2010), though required in most other floras.

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Habitat of Coll. No. 1166, Oenothera cespitosa ssp. marginata

Photographed 24 June 2015.

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Habitat of Coll. No. 1166, Oenothera cespitosa ssp. marginata

Photographed 24 June 2015.

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Oenothera coronopifolia

Coll. No. 2566, Oenothera coronopifolia

Photographed 2 December 2021.

Plants of Colorado
Onagraceae

Oenothera coronopifolia Torr. & A. Gray.  Crownleaf Evening Primrose.

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. 2875 m. Open hillside with pines, also collected here: Ipomopsis aggregata var. candida, Oreocarya thyrsiflora, Penstemon barbatus, Gutierrezia sarothrae, 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 2566. 12-Jul-2021

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Obs. No. 1599, Oenothera coronopifolia

Photographed 27 April 2018.

Determination tentative.

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Oenothera curtiflora

Coll. No. 1505, Oenothera curtiflora

Photographed 22 July 2016, along the Mesa Spur Trail, North Table Mountain Park, Jefferson County, Colorado.

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Inflorescence of Coll. No. 1505, Oenothera curtiflora

Photographed 22 July 2016, along the Mesa Spur Trail, North Table Mountain Park, Jefferson County, Colorado.

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Oenothera howardii

Coll. No. 1430, Oenothera howardii

Scanned 11 December 2016.

Leaves basal, large yellow flowers, winged capsule.

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Oenothera laciniata

Coll. No. 819, Oenothera laciniata

Scanned 23 May 2012.

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Coll. No. 819, Oenothera laciniata

Photographed 24 May 2012. I had to go out early in the morning to photograph the flowers fully open.

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Coll. No. 819, Oenothera laciniata

Photographed 24 May 2012. I had to go out early in the morning to photograph the flowers fully open.

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Coll. No. 819, Oenothera laciniata

Photographed 24 May 2012. I had to go out early in the morning to photograph the flowers fully open.

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Oenothera suffrutescens

Coll. No. 1866, Oenothera suffrutescens

Scanned 11 November 2018.

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Inflorescence of Coll. No. 1147, Oenothera suffrutescens

Scanned 22 October 2015.

Coll. No. 1147, 15 June 2015, characters observed: Perennial herb, to 40 cm.; Stem, exfoliating brown layer proximally, very few eglandular hairs distally; Leaves, cauline, alternate, sessile, 21 mm. × 4.5 mm. wide, elliptic, margin toothed; Bud, appressed hairy; Sepals, 9 mm., reflexed; Flowers, solitary in bracted spike or axils; Petals, 4, 7 mm. × 3 mm. wide, clawed 2 mm., color red, without spots or streaks; Capsule, 4 mm., mature size and shape unknown; Seeds, unknown.

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Coll. No. 317, Oenothera suffrutescens

Scanned 15 December 2012.

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Overview of Coll. No. 1147, Oenothera suffrutescens

Scanned 22 October 2015.

Coll. No. 1147, 15 June 2015, characters observed: Perennial herb, to 40 cm.; Stem, exfoliating brown layer proximally, very few eglandular hairs distally; Leaves, cauline, alternate, sessile, 21 mm. × 4.5 mm. wide, elliptic, margin toothed; Bud, appressed hairy; Sepals, 9 mm., reflexed; Flowers, solitary in bracted spike or axils; Petals, 4, 7 mm. × 3 mm. wide, clawed 2 mm., color red, without spots or streaks; Capsule, 4 mm., mature size and shape unknown; Seeds, unknown.

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Oenothera villosa

Coll. No. 1271, Oenothera villosa

Scanned 8 January 2015.

Coll. No. 1271, 29 July 2015, characters observed: Perennial herb, to 25 cm., ±straight hairy throughout; Stem, eglandular, villous, hairs with red pustular bases; Leaves, cauline, alternate, sessile, 55 mm. × 12 mm. wide, elliptical, reduced above, entire, very shallowly toothed; Inflorescence, leafy bracteate spike; Sepals, #4, 13 mm., reflexed; Floral tube, 24 mm.; Petals, #4, 9 mm. × 5 mm. wide, yellow fading pink, obovate, entire; Stigma, lobes #4; Capsules, 25-33 mm.; Seeds, 0.8 mm., squarish, glabrous throughout.

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Oenothera xylocarpa

Woody-Fruited Evening Primrose (Oenothera xylocarpa) in Smokey Bear Flat

Photograph taken 9 Sep 2011.

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Taraxia tanacetifolia

Coll. No. 561, Taraxia tanacetifolia Tansy-Leaved Suncup

Photograph taken August 14, 2008.

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Coll. no. 1195, Taraxia tanacetifolia

Photographed 26 June 2015.

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Date and time this article was prepared: 11/3/2024 5:39:52 PM