Eastern Mojave Vegetation
Images -- Species - Polygonaceae

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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Bistorta bistortoides

Coll. No. 2583, Bistorta bistortoides

Photographed 9 December 2021.

Plants of Colorado
Polygonaceae

Bistorta bistortoides (Pursh) Small.  American Bistort.

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, 106.3675°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 2583. 13-Jul-2021

Article records that use this photograph:

        images/IMGQ5519sm.jpg

Coll. No. 3122, Bistorta bistortoides.

Photographed 13 January 2024.

Plants of Colorado
Polygonaceae

Bistorta bistortoides (Pursh) Small.

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. 39.29752°N, 106.31733°W. WGS 1984 Elev. 3091 m. Muddy, wet place in willow thicket.

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

Tom Schweich 3122. 19-Jul-2023

Article records that use this photograph:

        images/IMGQ6060sm.jpg

Coll. No. 1480, Bistorta bistortoides

Photographed 26 December 2016.

Article records that use this photograph:

        images/IMGQ3496sm.jpg

Bistorta vivipara

Coll. No. 2878.1, Bistorta vivipara.

Photographed 1 December 2022.

Plants of Colorado
Polygonaceae

Bistorta vivipara (L.) Delarbre.  Alpine Bistort.

West Tennessee Creek, Lake County, Colorado. At the end of an old, closed forest road on the north side of West Tennessee Creek, 720 m. south of Lily Lake, 16.1 km. north northwest of Leadville. 39.3458°N, 106.3685°W. WGS 1984 Elev. 3198 m. Marshy place under forest trees., with Pedicularis groenlandica. Distances measured from GNIS point features.

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

Tom Schweich 2879.1 19-Jul-2022

Article records that use this photograph:

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Coll. No. 3130, Bistorta vivipara.

Photographed 20 July 2023.

Article records that use this photograph:

        images/20230719_113401sm.jpg

Chorizanthe

Coll. No. 123

Scanned 16 October 2012.

Article records that use this photograph:

        images/TAS001230Oview.jpg

Coll. No. 123

Scanned 16 October 2012.

Article records that use this photograph:

        images/TAS00123Det.jpg

Chorizanthe brevicornu brevicornu

Coll. No. 340.1, Chorizanthe brevicornu var. brevicornu

Scanned 17 October 2012.

Article records that use this photograph:

        images/TAS003401Oview.jpg

Chorizanthe brevicornu spathulata

Overview of Coll. No. 396, Chorizanthe brevicornu var. spathulatum

Scanned 15 August 2012.

Tentative determination.

Article records that use this photograph:

        images/TAS003960Oview.jpg

Chorizanthe rigida

Chorizanthe rigida in the Cima Volcanic Field.

        images/1621-02.jpg

Dedeckera eurekensis

July Gold (Dekeckera eurekensis) as seen in May.

Photograph taken 13-May-07 in Coldwater Canyon.

Location records that use this photograph:

        images/IMG_1554sm.jpg

Eriogonum

Collection Number 469

Big Sand Flat, Mono County, California. Collected on the ridge just northwest of Big Sand Flat in an area that had burned several years previously. 37.8872°N, 118.898°W. UTM: 11S 4194993N 333197E. Elev. 8000 ft.

Article records that use this photograph:

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Coll. No. 252, Eriogonum

Scanned 23 May 2015.

Collection immature, discarded.

Article records that use this photograph:

        images/TAS002520Oview.jpg

Coll. No. 94, Eriogonum

Scanned 16 October 2012.

Collection immature, discarded.

Article records that use this photograph:

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Eriogonum actuatum

Coll. No. 1232, Eriogonum flavum var. flavum arcuatum

Scanned 16 December 2015.

Coll. No. 1232, 20 Jul 2015, characters observed: Perennial herb, to 15 cm., caespitose but not mat-forming, scapose; Leaves, basal, petiole 8-10 mm. + blade 40-45 mm. × 12-18 mm. wide, elliptic-oblanceolate, adaxial tomentose but still ±green, abaxial densely white tomentose; Inflorescence, scape, 100 mm., bracts, #8, 2° branching, but not umbellate, 1° branch 35-40 mm., 2° branch (peduncle), ±15 mm.; Involucre, #8-10 per scape, tube 3.5 mm. + lobes 1 mm., rounded, reflexed; Flowers, stipe-like base, 0.8 mm.; Perianth, bright yellow, fading red, 6 mm. (measured from base of stipe), long straight hairy.

Article records that use this photograph:

        images/TAS012310Invol.jpg

Eriogonum alatum

Voucher of Coll. No. 2390, Eriogonum alatum

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

Article records that use this photograph:

        images/IMGQ5306sm.jpg

Seed of Eriogonum alatum

Scanned 29 August 2020. Seed collected 28 August 2020 on Eagle Ridge.

Article records that use this photograph:

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Eriogonum alatum

Photographed 22 July 2016, North Table Mountain Park, Jefferson County, Colorado.

Location records that use this photograph:

Article records that use this photograph:

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Inflorescence and leaves of Coll. No. 1238, Eriogonum alatum

Scanned 19 December 2015.

Article records that use this photograph:

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Involucre, flowers and achenes of Coll. No. 1238, Eriogonum alatum

Scanned 19 December 2015.

Article records that use this photograph:

        images/TAS012380Achene.jpg

Eriogonum arcuatum

Map of collections determined one of the two taxa of Eriogonum in Colorado

Map generated 21 September 2020.

Article records that use this photograph:

        images/SEINet20200921_78Eriogonum.jpg

Eriogonum arcuatum on top of North Table Mountain.

Photographed 22 May 2024.

Location records that use this photograph:

Article records that use this photograph:

        images/20240522_113030sm.jpg

Eriogonum arcuatum on top of North Table Mountain.

Photographed 22 May 2024.

Location records that use this photograph:

Article records that use this photograph:

        images/20240522_113338sm.jpg

Coll. No. 1232, Eriogonum flavum var. flavum arcuatum.

Photographed 20 July 2015. Bouteloua gracilis (Blue Grama) in the background.

Coll. No. 1232, 20 Jul 2015, characters observed: Perennial herb, to 15 cm., caespitose but not mat-forming, scapose; Leaves, basal, petiole 8-10 mm. + blade 40-45 mm. × 12-18 mm. wide, elliptic-oblanceolate, adaxial tomentose but still ±green, abaxial densely white tomentose; Inflorescence, scape, 100 mm., bracts, #8, 2° branching, but not umbellate, 1° branch 35-40 mm., 2° branch (peduncle), ±15 mm.; Involucre, #8-10 per scape, tube 3.5 mm. + lobes 1 mm., rounded, reflexed; Flowers, stipe-like base, 0.8 mm.; Perianth, bright yellow, fading red, 6 mm. (measured from base of stipe), long straight hairy.

Article records that use this photograph:

        images/IMGX1294sm.jpg

Coll. No. 1232, Eriogonum flavum var. flavum arcuatum

Photographed 20 July 2015.

Coll. No. 1232, 20 Jul 2015, characters observed: Perennial herb, to 15 cm., caespitose but not mat-forming, scapose; Leaves, basal, petiole 8-10 mm. + blade 40-45 mm. × 12-18 mm. wide, elliptic-oblanceolate, adaxial tomentose but still ±green, abaxial densely white tomentose; Inflorescence, scape, 100 mm., bracts, #8, 2° branching, but not umbellate, 1° branch 35-40 mm., 2° branch (peduncle), ±15 mm.; Involucre, #8-10 per scape, tube 3.5 mm. + lobes 1 mm., rounded, reflexed; Flowers, stipe-like base, 0.8 mm.; Perianth, bright yellow, fading red, 6 mm. (measured from base of stipe), long straight hairy.

Article records that use this photograph:

        images/IMGQ1291sm.jpg

Coll. No. 1232, Eriogonum flavum var. flavum arcuatum

Scanned 16 December 2015.

Coll. No. 1232, 20 Jul 2015, characters observed: Perennial herb, to 15 cm., caespitose but not mat-forming, scapose; Leaves, basal, petiole 8-10 mm. + blade 40-45 mm. × 12-18 mm. wide, elliptic-oblanceolate, adaxial tomentose but still ±green, abaxial densely white tomentose; Inflorescence, scape, 100 mm., bracts, #8, 2° branching, but not umbellate, 1° branch 35-40 mm., 2° branch (peduncle), ±15 mm.; Involucre, #8-10 per scape, tube 3.5 mm. + lobes 1 mm., rounded, reflexed; Flowers, stipe-like base, 0.8 mm.; Perianth, bright yellow, fading red, 6 mm. (measured from base of stipe), long straight hairy.

Article records that use this photograph:

        images/TAS012320Oview.jpg

Coll. No. 1695, Eriogonum arcuatum

Scanned 28 December 2017.

Article records that use this photograph:

        images/TAS016950Oview.jpg

Coll. No. 1401.1, Eriogonum arcuatum

Scanned 15 December 2016.

Coll. No. 1401.1, 8 Jun 2015, characters observed: Perennial, caespitose, to 10 cm.; Leaves, basal, elliptic, petiole 10 mm. + blade 30 mm. × 12 mm. wide, adaxial greenish floccose, abaxial tomentose; Flowering stems, without a whorl of bracts mid-stem; Inflorescence, umbellate (simple, not compound); Involucre, sessile (not peduncled), 4.5 mm., hairy, teeth, very short; Flowers, (obscurely) attenuate at base; Perianth, 4.5-6.0 mm., bright yellow, hairy.

Article records that use this photograph:

        images/TAS014011Oview.jpg

Inflorescence of Coll. No. 1401.1, Eriogonum arcuatum

Scanned 15 December 2016.

The thing to see here are sessile involucres. If the involucres were peduncled then we might think this was E. flavum.

Coll. No. 1401.1, 8 Jun 2015, characters observed: Perennial, caespitose, to 10 cm.; Leaves, basal, elliptic, petiole 10 mm. + blade 30 mm. × 12 mm. wide, adaxial greenish floccose, abaxial tomentose; Flowering stems, without a whorl of bracts mid-stem; Inflorescence, umbellate (simple, not compound); Involucre, sessile (not peduncled), 4.5 mm., hairy, teeth, very short; Flowers, (obscurely) attenuate at base; Perianth, 4.5-6.0 mm., bright yellow, hairy.

Article records that use this photograph:

        images/TAS014011Infl.jpg

Inflorescence of Coll. No. 1695, Eriogonum arcuatum

Scanned 28 December 2017.

Article records that use this photograph:

        images/TAS016950Infl.jpg

Eriogonum baileyi baileyi

Dirt-pile Habitat of Eriogonum baileyi var. baileyi near Sagehen Meadow

Photograph taken 8 August 2010.

Location records that use this photograph:

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Infloresence of Eriogonum baileyi var. baileyi.

Photograph taken 8 August 2010.

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Flower of Eriogonum baileyi var. baileyi.

Photograph taken 8 August 2010.

Location records that use this photograph:

Article records that use this photograph:

        images/IMGP0760sm.jpg

Dense growth of Coll. No. 892 Eriogonum baileyi var. baileyi two years after the Crater Fire.

Photographed 23 August 2012.

Coll. No. 892, 23 August 2012, characters observed while keying: Annual, to 30 cm; Stem glabrous; Leaves, basal, ±round, tomentose, but withered at anthesis; Peduncles 0; Involucre, 2 mm, 5-toothed, slightly ribbed, sessile, appressed along branched and at tips of branchlets, glabrous, ciliate at margins; Flowers 1.8-2.0 mm; Petals, oblong, constricted toward middle giving the perianth a bell shape, small patches of color tending toward red rather than yellow, should be minutely glandular but not visible at 50x.

Article records that use this photograph:

        images/IMG30631sm.jpg

Coll. No. 696, Eriogonum baileyi var. baileyi

Scanned 13 Nov 2011.

Coll. No. 696, 13 Nov 2011, characters observed while keying; Annual; Stem glabrous; Leaves basal; Infloresence elongate; Involucres subtended by bracts, sessile, 2 mm, ribbed; Flowers glabrous, 1.5 mm, white to rose.

Article records that use this photograph:

        images/TAS006960Oview.jpg

Eriogonum brachyanthum

Collection No. 519, Eriogonum brachyanthum

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

Article records that use this photograph:

        images/TAS005190oview.jpg

Collection No. 509, Eriogonum brachyanthum

Scanned 16 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS005090det.jpg

Collection No. 509, Eriogonum brachyanthum

Scanned 16 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS005090oview.jpg

Collection No. 492.1

Scanned 3 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS004911oview.jpg

Collection No. 492.1

Scanned 3 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS004921infl.jpg

Eriogonum caespitosum

Coll No. 486 Eriogonum caespitosum

Photograph taken 26-Jun-07.

Article records that use this photograph:

        images/IMG_1812sm.jpg

Coll. No. 486, Eriogonum caespitosum

The grid spacing is 1/4 inch.

Article records that use this photograph:

        images/TAS004860oview.jpg

Coll. No. 486, Eriogonum caespitosum

The grid spacing is 1/4 inch.

Coll. No. 486, 27 Nov 2011, characters observed while keying; Perennial matted; Peduncle bractless (TJM2 says "stem bractless" and Taylor says "infloresence bractless"); Tepals uniform in width, reflexed; Perianth base extended slightly to an expanded joint-like abcission zone, yellow, hairy.

Article records that use this photograph:

        images/TAS004860det.jpg

Coll. No. 967, Eriogonum caespitosum

Scanned on 8 Feb 2014.

Article records that use this photograph:

        images/TAS009670Oview.jpg

Eriogonum davidsonii

Coll. No. 140, Eriogonum davidsonii

Scanned 23 May 2015.

Coll. No. 140, 22 Sep 1997, characters observed: Annual, tap-rooted, to 18 cm.; Leaves, basal only, petiole 7 mm., blade 13 mm. × 11 mm. wide, round-ovate; Involucre, sessile in axils, 2.5 mm., angled, margins hairy; Flowers, 2 mm., pink, glabrous, outer perianth lobes neither fan-shaped nor hastate.

Article records that use this photograph:

        images/TAS001400Oview.jpg

Eriogonum deflexum nevadense

Collection No. 492.2, Eriogonum deflexum var. nevadense

Scanned 3 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS004922oview.jpg

Collection No. 492.2, Eriogonum deflexum var. nevadense

Scanned 3 March 2011. Background grid is 10 x 10 to the inch.

Article records that use this photograph:

        images/TAS004922infl.jpg

Eriogonum effusum

Coll. No. 3192, Eriogonum effusum.

Photographed 29 January 2024.

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

Eriogonum effusum Nuttall, Proc. Acad. Nat. Sci. Philadelphia. 4: 15. 1848.  Spreading Buckwheat.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Top of slope overlooking an unnamed stream to the northwest, southeast quadrant of the Survey Field, 2.36 km. (geodesic) south of the GNIS location of Golden. 39.73432°N, 105.21896°W. WGS 1984 Elev. 1826 m. Leaves withered. Highest mixed grass prairie near Rocky Mountain Front Range scarp, also nearby: Gutierrezia sarothrae, Senecio spartioides, and Cercocarpus montanus.

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

Tom Schweich 3192. 27-Aug-2023

Article records that use this photograph:

        images/IMGQ6084sm.jpg

Voucher of Coll. No. 2431.1, Eriogonum effusum

Photographed 7 January 2020. This voucher will be distributed to JCOS.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum effusum Nuttall, Proc. Acad. Nat. Sci. Philadelphia. 4: 15. 1848.  Spreading Buckwheat.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. 39.7247°N, 105.2192°W. WGS 1984 Elev. 1868 m. Most leaves withered. Mixed foothills shrubland and grassland. Also seen or collected here: Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides (in bud, no flowers), Solidago missouriensis, and Xanthisma spinulosum.

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

Tom Schweich 2431.1 19-August-2020

Article records that use this photograph:

        images/IMGQ5310sm.jpg

Eriogonum effusum along trail at Red Rocks

Photographed 7 October 2015.

Article records that use this photograph:

        images/IMGQ1733sm.jpg

Eriogonum effusum along trail at Red Rocks

Photographed 7 October 2015.

Article records that use this photograph:

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Eriogonum elatum elatum

Coll. No. 1030, Eriogonum elatum var. elatum

Scanned 10 February 2015.

Coll. No. 1030, 24 Jul 2015, characters observed while keying: Perennial erect herb from caudex, to 80 cm.; Stem to 50 cm., not jointed, slightly inflated, glabrous; Leaves, petioles 11-13 cm., ovate-elliptic, 8-9 cm. × 2.5-3.5 cm. wide, short-hairy adaxially, hairy to near-tomentose abaxially; Inflorescence branched, branches glabrous; Involucre, 2-3 per node, 15 mm. wide; Pedicels glabrous; Stipe 0; Flower hairy; Perianth lobes 5, all alike.

Article records that use this photograph:

        images/TAS010300Base.jpg

Coll. No. 1030, Eriogonum elatum var. elatum

Photographed 10 February 2015.

Coll. No. 1030, 24 Jul 2015, characters observed while keying: Perennial erect herb from caudex, to 80 cm.; Stem to 50 cm., not jointed, slightly inflated, glabrous; Leaves, petioles 11-13 cm., ovate-elliptic, 8-9 cm. × 2.5-3.5 cm. wide, short-hairy adaxially, hairy to near-tomentose abaxially; Inflorescence branched, branches glabrous; Involucre, 2-3 per node, 15 mm. wide; Pedicels glabrous; Stipe 0; Flower hairy; Perianth lobes 5, all alike.

Article records that use this photograph:

        images/IMG40871sm.jpg

Coll. No. 1030, Eriogonum elatum var. elatum

Photographed 11 February 2015.

Coll. No. 1030, 24 Jul 2015, characters observed while keying: Perennial erect herb from caudex, to 80 cm.; Stem to 50 cm., not jointed, slightly inflated, glabrous; Leaves, petioles 11-13 cm., ovate-elliptic, 8-9 cm. × 2.5-3.5 cm. wide, short-hairy adaxially, hairy to near-tomentose abaxially; Inflorescence branched, branches glabrous; Involucre, 2-3 per node, 15 mm. wide; Pedicels glabrous; Stipe 0; Flower hairy; Perianth lobes 5, all alike.

Article records that use this photograph:

        images/IMGQ0108sm.jpg

Coll. No. 1030, Eriogonum elatum var. elatum

Photographed 24 July 2013.

Article records that use this photograph:

        images/IMG_1622sm.jpg

Eriogonum fasciculatum polifolium

Collection No. 160, Eriogonum fasciculatum ssp. polifolium

Article records that use this photograph:

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Collection No. 160, Eriogonum fasciculatum ssp. polifolium

Article records that use this photograph:

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Collection No. 86, Eriogonum fasciculatum var. polifolium

Article records that use this photograph:

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Collection No. 86, Eriogonum fasciculatum var. polifolium

Article records that use this photograph:

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Collection No. 86, Eriogonum fasciculatum var. polifolium

Article records that use this photograph:

        images/TAS000860oview.jpg

Coll. No. 322, Eriogonum fasciculatum var. polifolium

Scanned 21 October 2012.

Article records that use this photograph:

        images/TAS003320Oview.jpg

Eriogonum inflatum

Eriogonum inflatum in bloom near Stovepipe Wells, Death Valley.

Article records that use this photograph:

  • California Highway 190: 32000.

        images/caeriinfspw.jpg

Eriogonum inflatum

Photographed in May, 1999, on the ridge between Macedonia Canyon and the Silver Buddy Mine.

        images/2907-05.jpg

Eriogonum inflatum

Photograph taken in May, 1999, on the ridge between Macedonia Canyon and the Silver Buddy Mine.

        images/2907-07.jpg

Eriogonum inflatum

Photograph taken in May, 1999, on the ridge between Macedonia Canyon and the Silver Buddy Mine.

        images/2907-06.jpg

Coll. No. 285.1, Eriogonum inflatum

Scanned 12 October 2012.

Coll. No. 285.1, 12 Oct 2012, characters observed while keying: Annual or perennial flowering in first year, not glandular; Leaves basal only, round to obovate, to 20 mm, straight hairy both surfaces; Involucre peduncled, smooth, > 1.0 mm.; Flowers yellow, 1.5 mm., hairy.

Article records that use this photograph:

        images/TAS002851.jpg

Eriogonum jamesii

Eriogonum jamesii beside the D&RGW track.

Photographed 25 July 2018.

Article records that use this photograph:

        images/20180725_133156sm.jpg

Eriogonum maculatum

Coll. No. 446, Eriogonum maculatum, from the Mesquite Mountains.

Scanned 22-Jan-06.

Article records that use this photograph:

        images/TAS004460.jpg

Eriogonum microthecum

Coll. No. 97, Eriogonum microthecum

Scanned 22 October 2012.

There are no flowers on this collection. Collection discarded.

Article records that use this photograph:

        images/TAS000970Oview.jpg

Eriogonum microthecum ambiguum

Overview of Collection No. 558, Eriogonum microthecum var. ambiguum

The thing to notice about this collection is a subshrub with upright woody branches.

Article records that use this photograph:

        images/TAS005580oview.jpg

Inflorescence of Collection No. 558, Eriogonum microthecum var. ambiguum

The thing to see in this photo are yellow flowers without a stipe.

Article records that use this photograph:

        images/TAS005580infl.jpg

Leaves of Collection No. 558, Eriogonum microthecum var. ambiguum

Article records that use this photograph:

        images/TAS005580lvs.jpg

Overview of Coll. No. 678, Eriogonum microthecum var. ambiguum

Scanned 27 Oct 2011.

27 Oct 2011: Characters observed while keying: Subshrub ± erect (not cushion-like or matted); Stems upright, not jointed; Leaves not in fascicles, 10-20 mm, slightly rolled under; Bracts scale-like (as opposed to leaf-like); Infloresence branches short, evenly branched; Involucres solitary, terminal; Perianth base not jointed with a pedicel, glabrous, yellow.

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        images/TAS006780Oview.jpg

Habitat of Eriogonum microthecum var. ambiguum

Photograph taken 22 Jul 2010. This was the location of my collection #678.

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        images/IMGP0570sm.jpg

Eriogonum microthecum laxiflorum

Coll. No. 798, Eriogonum microthecum var. laxiflorum

Scanned 30 Dec 2011.

Coll. No, 798, 30 Dec 2011, characters observed while keying: Perennial erect shrub with woody branches; Leaves not fasciculate, slightly revolute; Infloresence of solitary involucres, branches equal in size; Perianth base not expanded into a small stipe and jointed with pedicel; Flowers white to pink.

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        images/TAS007980Oview.jpg

Eriogonum nidularium

Coll. No. 320, Eriogonum nidularium

Scanned 17 October 2012.

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Coll. No. 320, Eriogonum nidularium

Scanned 17 October 2012. Scale bar is 10 mm.

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        images/TAS00320Det.jpg

Eriogonum nudum

Coll. No. 700, Eriogonum nudum

Scanned 13 Nov 2011.

Coll. No. 700, 13 Nov 2011, characters observed while keying; Perennial herbaceous, erect; Leaves basal, 22-32 mm, elliptic, subglabrous above (glabrous with a few cobwebby hairs); Infloresence in cymose heads, glabrous; Tepals glabrous; Perianth base entire (not jointed).

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        images/TAS007000Oview.jpg

Eriogonum nummulare

Coll. No. 574, Eriogonum nummulare

Scanned May 6, 2010, grid is 10x10 to the inch.

Determination tentative, material was immature and was therefore discarded.

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        images/TAS005740Oview.jpg

Coll. No. 574, Eriogonum nummulare

Scanned May 6, 2010, grid is 10x10 to the inch.

Determination tentative, material was immature and was therefore discarded.

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        images/TAS005740Infl.jpg

Coll. No. 574, Eriogonum nummulare

Scanned May 6, 2010, grid is 10x10 to the inch.

Determination tentative, material was immature and was therefore discarded.

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        images/TAS005740Lvs.jpg

Eriogonum ovalifolium ovalifolium

Coll. No. 405, Eriogonum ovalifolium var. ovalifolium

Scanned 21 October 2012.

Just to the right of center is a flower seen anxially; note that the inner lobes of the perianth are much more narrow than the outer lobes of the perianth.

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        images/TAS004050Infl.jpg

Coll. No. 405, Eriogonum ovalifolium var. ovalifolium

Scanned 21 October 2012.

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        images/TAS004050Oview.jpg

Eriogonum rosense rosense

Mount Rose Wild Buckwheat (Eriogonum rosense var. rosense)

Photographed 23 July 2013, and the south end of the Ellery Lake dam.

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        images/IMG_1590sm.jpg

Eriogonum spergulinum

Detail of Collection No. 554

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        images/TAS005540det.jpg

Overview of Collection No. 554

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        images/TAS005540oview.jpg

Eriogonum spergulinum reddingianum

Coll. No. 468, Eriogonum spergulinum var. reddingianum

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        images/TAS004680oview.jpg

Coll. No. 468, Eriogonum spergulinum var. reddingianum

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        images/TAS004680infl.jpg

Eriogonum umbellatum

How to distinguish between Eriogonum umbellatum var. umbellatum and var. nevadense per FNANM.

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        images/79Eriumbvar.jpg

Eriogonum umbellatum majus

Coll. No. 2588, Eriogonum umbellatum var. majus

Photographed 10 December 2021.

Plants of Colorado
Polygonaceae

Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook.  Subalpine Sulphur-Flower Buckwheat.

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, 106.3654°W. WGS 1984 Elev. 3229 m. Flowers pale yellow. Dry rocky clearing in lodgepole pine forest.

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

Tom Schweich 2588. 13-Jul-2021

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        images/IMGQ5525sm.jpg

Coll. No. 3141, Eriogonum umbellatum var. majus.

Photographed 17 January 2024.

Plants of Colorado
Polygonaceae

Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook.  Subalpine Sulphur-Flower Buckwheat.

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. 39.26066°N, 106.22032°W. WGS 1984 Elev. 3450 m. Perianth light yellow. Sunny open southeast-facing slope.

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

Tom Schweich 3141. 20-Jul-2023

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        images/IMGQ6069sm.jpg

Eriogonum umbellatum nevadense

Detail of Collection No. 557, Eriogonum umbellatum var. nevadense

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        images/TAS005570det.jpg

Coll. No. 474, Eriogonum umbellatum var. nevadense

The grid spacing is 1/4 inch.

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        images/TAS004740infl.jpg

Habit of Eriogonum umbellatum var. nevadense near Sagehen Meadow.

Photograph taken 15 Jul 2010 just northeast of the house in Sagehen Meadow.

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        images/IMGQ0417sm.jpg

Coll. No. 474, Eriogonum umbellatum var. nevadense

The grid spacing is 1/4 inch.

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        images/TAS004740lvs.jpg

Eriogonum umbellatum var. nevadense

Photograph taken 15 Jul 2010 just northeast of the house in Sagehen Meadow.

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        images/IMGQ0422sm.jpg

Overview of Coll. No. 557, Eriogonum umbellatum var. nevadense

Collection discarded, either E. baileyi or E. brachyanthum, but not mature enough to determine.

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        images/TAS005570oview.jpg

Overview of Eriogonum umbellatum var. nevadense

Scanned 17 May 2011.

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        images/TAS006610Oview.jpg

Infloresence of Eriogonum umbellatum var. nevadense

Scanned 17 May 2011.

        images/TAS006610Det.jpg

Illustration of a “stipe” on Coll. No. 557

Scanned 15 August 2012.

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        images/TAS005570Stipe.jpg

Eriogonum umbellatum ramulosum

Coll. No. 2389, Eriogonum umbellatum var. ramulosum

Photographed 21 December 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum umbellatum Torr. var. ramulosum Reveal.  Buffalo Bill's Sulphur Flower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Nearing the top of the initial Rocky Mountain Front Range scarp, approximate center of north parcel, 2.06 km. southeast of Buffalo Bill's grave, and 4.82 km. south of the GNIS location of Golden. 39.7224°N, 105.2255°W. WGS 1984 Elev. 2082 m. Seven of eight inflorescences collected have the extra whorl of bracts below the inflorescence branches. North-facing slope, mixed foothills shrubland at edge of ponderosa pine woodland, also collected here: Claytonia rosea, Ceanothus fendleri, and Anaphalis margaritacea.

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

Tom Schweich 2389. 17-Jul-2020

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        images/IMGQ5269sm.jpg

Inflorescence of Coll. No. 2389, Eriogonum umbellatum var. ramulosum

Photographed 21 December 2020.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum umbellatum Torr. var. ramulosum Reveal.  Buffalo Bill's Sulphur Flower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Nearing the top of the initial Rocky Mountain Front Range scarp, approximate center of north parcel, 2.06 km. southeast of Buffalo Bill's grave, and 4.82 km. south of the GNIS location of Golden. 39.7224°N, 105.2255°W. WGS 1984 Elev. 2082 m. Seven of eight inflorescences collected have the extra whorl of bracts below the inflorescence branches. North-facing slope, mixed foothills shrubland at edge of ponderosa pine woodland, also collected here: Claytonia rosea, Ceanothus fendleri, and Anaphalis margaritacea.

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

Tom Schweich 2389. 17-Jul-2020

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        images/IMGQ5279sm.jpg

Coll. No. 3177, Eriogonum umbellatum var. ramulosum.

Photographed 25 January 2024.

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

Eriogonum umbellatum Torr. var. ramulosum Reveal.  Buffalo Bill's Sulphur Flower.

Guy Gulch, Jefferson County, Colorado. Southwest side of County Road 70 and the gulch, 600 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden, and 12.7 km. northwest of Buffalo Bill's grave. 39.79777°N, 105.35992°W. WGS 1984 Elev. 2379 m. Outwash delta of small watercourse with smooth brome, snowberry, aspen, and water birch. This collection fits the description of var. ramulosum with the branched inflorescence and bracted branches, whereas other parts of same plant do not. Coll. No. 3078 made nearby was similarly ambiguous as to variety.

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

Tom Schweich, with John Vickery 3177. 31-Jul-2023

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        images/IMGQ6079sm.jpg

Eriogonum umbellatum umbellatum

Coll. No. 1486, Eriogonum umbellatum var. umbellatum

Photographed 1 January 2017.

Large plants found on steep rocky lower slopes of Lookout Mountain.

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        images/IMGQ3511sm.jpg

Inflorescence of Coll. No. 1445, Eriogonum umbellatum var. umbellatum

Scanned 15 December 2016.

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        images/TAS014452Infl.jpg

Coll. No. 1445, Eriogonum umbellatum var. umbellatum

Scanned 15 December 2016.

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        images/TAS014452Oview.jpg

Habitat of Coll. No. 1445, Eriogonum umbellatum

Photographed 22 June 2016.

As it happens, this is also good habitat for Phemeranthus parviflorum (Nutt.) Kiger.

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        images/IMGQ2770sm.jpg

Eriogonum wrightii subscaposum

Coll. No. 701, Eriogonum wrightii var. subscaposum

Scanned 13 Nov 2011.

Coll. No. 701, 13 Nov 2011, characters observed while keying; Perennial subshrub (as opposed to matted, suggesting var. wrightii), to 2 dm; Stems white tomentose; Leaf blade 8-10 mm, petiole bases not forming a ring around stem; Infloresence raceme-like; Involucres 1 per node, 2.5 mm Bracts 3; Tepals uniform in width; Flower stipe 0.

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        images/TAS007010Oview.jpg

Fallopia baldschuanica

Regel's illustration of Fallopia baldschuanica.

Plate X in Regel (1883).

a. Ramus cum panicula, — flos a latere visus, — flos apertus a latere superiore visus. — d. e. stamina. — f. pistillum. — g. h. fructus maturi. — i. achaenium. — Figurae a, g, h, i magnitudine naturali, — b , c, d , e, f auctae. — k. floris digramma.    

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        images/RegelE1883_78Falbal_illus.jpg

Coll. No. 3230, Fallopia baldschuanica.

Photographed 29 September 2023.

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        images/20230929_124547sm.jpg

View of Coll. No. 3230, Fallopia baldschuanica, from north..

Photographed 29 September 2023.

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        images/20230929_124512sm.jpg

Fallopia baldusanica on Gregory Drive.

Photographed 4 September 2024.

Article records that use this photograph:

  • Gregory Drive, Golden, Jefferson County, Colorado: 30320.
  • Field Notes: 4 Sep 2024.

        images/20240904_120530sm.jpg

Fallopia baldschuanica on Gregory Drive.

Photographed 4 September 2024.

Article records that use this photograph:

  • Gregory Drive, Golden, Jefferson County, Colorado: 30320.
  • Field Notes: 4 Sep 2024.

        images/20240904_120518sm.jpg

Fallopia baldschuanica on Gregory Drive.

Photographed 4 September 2024.

Article records that use this photograph:

  • Gregory Drive, Golden, Jefferson County, Colorado: 30320.
  • Field Notes: 4 Sep 2024.

        images/20240904_120501sm.jpg

Coll. No. 3230, Fallopia baldschuanica.

Photographed 29 September 2023.

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        images/20230929_124538sm.jpg

View of Coll. No. 3230, Fallopia baldschuanica, from south.

Photographed 29 September 2023.

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        images/20230929_124430sm.jpg

Coll. No. 3230, Fallopia baldschuanica.

Photographed 29 September 2023.

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        images/20230929_124637sm.jpg

Goodmania luteola

Goodmania luteola (Parry) Reveal and Ertter

Photograph taken 21 June 2011.

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        images/IMGP1012sm.jpg

Collection No. 624

Photograph taken 29 June 2010.

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        images/IMGP0237sm.jpg

Collection No. 624

Photograph taken 29 June 2010.

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        images/IMGP0237det.jpg

Oxytheca

Collection No. 448 from the Mesquite Mountains

Scanned 22-Jan-06.

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        images/TAS004480det.jpg

Collection No. 448 from the Mesquite Mountains

Scanned 22-Jan-06.

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        images/TAS004480.jpg

Oxytheca perfoliata

Coll. No. 448, Oxytheca perfoliata

Scanned 12 October 2012.

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        images/TAS004480Oview.jpg

Coll. No. 346, Oxytheca perfoliata

Scanned 16 October 2012.

Coll. No. 346, 20 Apr 2004, characters observed while keying: Annual; Stem ocreae absent, glandular proximal 1/2 internode; Leaves basal, oblanceolate to 15 mm., entire; Involucre bell-shaped (not tubular per TJM2), bracts 4, fused at base, awns 4 2.0-2.5 mm.; Perianth hairy.

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        images/TAS003460Det.jpg

Persicaria hydropiper

Coll. No. 2748, Persicaria hydropiper

Photographed 17 February 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Persicaria hydropiper (L.) Delarbre.  Marshpepper Knotweed.

Lippincott Ranch, Jefferson County, Colorado. Southwestern portion of the ranch, in an unnamed drainage that is tributary to Bull Gulch, 1.09 km. northwest of the main gate, 22.7 km. north northwest of the GNIS location of Golden. 39.9055°N, 105.279°W. WGS 1984 Elev. 2003 m. Growing in a little bit of flowing water. Also collected in this stream: Ranunculus sceleratus, Barbarea vulgaris, Gratiola neglecta, and Urtica dioica. 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 2748. 7-Sep-2021

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        images/IMGQ5618sm.jpg

Persicaria pensylvanicum

Coll. No. 1730, Persicaria pensylvanicum

Photographed 6 January 2018.

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        images/IMGQ4524sm.jpg

Polygonum aviculare

Coll. No. 2590.3, Polygonum aviculare.

Scanned 12 December 2021.

Plants of Colorado
Polygonaceae

Polygonum aviculare L.  Prostrate Knotweed.

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. Dry rocky opening in lodgepole pine forest. One of six little annuals collected here, others are Gayophytum decipiens, 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 2590.3 13-Jul-2021

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        images/TAS025903Oview.jpg

Polygonum douglasii

Coll. No. 1718, Polygonum douglasii

Photographed 1 January 2018.

Coll. No. 1718, 28 Jul 2017, characters observed: Annual, to 35-40 cm., generally glabrous; Leaves, cauline, alternate, some sort of papery tissue at base of leaf that could be an ocrea, 20 mm. × 1 mm. wide, linear to narrowly lanceolate, adaxial sparsely pitted, margins revolute; Inflorescence, flowers borne singly in axils; Flowers, stipe-like base; Perianth, #5 (looked like 3 outer and 3 inner to me) 2.5 mm. × 1 mm. wide, outer, greenish with pink margins, inner, pink with green mid-vein; Stamens, #8 (I was able to count 6), 1.4 mm.; Filaments, winged below; Ovary, superior, 1 mm. × 0.6 mm. wide; Styles, #3, 0.3 mm.; Stigmas, 1 per style; Fruit, 2.5 mm., black.

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        images/IMGQ4519sm.jpg

Coll. No. 1718, Polygonum douglasii

Scanned 1 January 2018.

Coll. No. 1718, 28 Jul 2017, characters observed: Annual, to 35-40 cm., generally glabrous; Leaves, cauline, alternate, some sort of papery tissue at base of leaf that could be an ocrea, 20 mm. × 1 mm. wide, linear to narrowly lanceolate, adaxial sparsely pitted, margins revolute; Inflorescence, flowers borne singly in axils; Flowers, stipe-like base; Perianth, #5 (looked like 3 outer and 3 inner to me) 2.5 mm. × 1 mm. wide, outer, greenish with pink margins, inner, pink with green mid-vein; Stamens, #8 (I was able to count 6), 1.4 mm.; Filaments, winged below; Ovary, superior, 1 mm. × 0.6 mm. wide; Styles, #3, 0.3 mm.; Stigmas, 1 per style; Fruit, 2.5 mm., black.

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        images/TAS017180Oview.jpg

Rheum × hybridum

“Rhubarb” Rheum × hybridum, on the hillside in Guy Gulch.

Photographed 12 July 2023.

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        images/20230712_094654sm.jpg

Rumex acetosella

Tabernaemontanus (1590) illustration of Oxalis ovina.

Probable source of the common name of Sheep Sorrell for Rumex acetosella.

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        images/Tabernaemontanus_t440_Oxalis ovina.jpg

Coll. No. 2079, Rumex acetosella

Photographed 13 October 2019.

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        images/IMGQ5051sm.jpg

Coll. No. 1841, Rumex acetosella

Scanned 3 November 2018.

Coll. No. 1841, 17 May 2018, characters observed: Perennial herb from woody rootstock, to 30 cm., dioecious (all plants in this collection staminate); Leaves, basal and cauline similar, ocrea, 7-10 mm., petiole 20 mm. + blade 12-24 mm. × 6 mm. wide, base hastate, lobes pointing outward, tip acuminate; Pedicels, 1-3 mm.; Flowers, bulbar-like base, described as stipe-like, but does not look stipe-like such as that seen in Eriogonum umbellatum; Pedicels, 1-3 mm.; Tepals, #6, 1.7 mm., reddish.

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        images/TAS018410Oview.jpg

Inflorescence of Coll. No. 1841, Rumex acetosella

Scanned 3 November 2018.

Coll. No. 1841, 17 May 2018, characters observed: Perennial herb from woody rootstock, to 30 cm., dioecious (all plants in this collection staminate); Leaves, basal and cauline similar, ocrea, 7-10 mm., petiole 20 mm. + blade 12-24 mm. × 6 mm. wide, base hastate, lobes pointing outward, tip acuminate; Pedicels, 1-3 mm.; Flowers, bulbar-like base, described as stipe-like, but does not look stipe-like such as that seen in Eriogonum umbellatum; Pedicels, 1-3 mm.; Tepals, #6, 1.7 mm., reddish.

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        images/TAS018410Infl.jpg

Rumex crispus

Coll. No. 2817, Rumex crispus

Photographed 5 September 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Rumex crispus L.  Curley Dock.

Tin Cup Ridge, Jefferson County, Colorado. On the east side, steep mid-slope, of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.55 km. south southeast of the GNIS location of Golden. 39.7123°N, 105.204°W. WGS 1984 Elev. 1910 m. Most basal leaves withered. Growing with: Rhus trilobata, Ericameria nauseosa var. graveolens, and Cercocarpus montanus

Collected by permit: Jefferson County Open Space, 2022, issued: Apr 5, 2022, to: Tom Schweich.

Tom Schweich 2817. 28-Jun-2022

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        images/IMGQ5674sm.jpg

Coll. No. 818, Rumex crispus

Scanned 25 January 2013.

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        images/TAS008180Oview.jpg

Rumex densiflorus

Coll. No. 2007, Rumex densiflorus

Photographed 27 January 2019.

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        images/IMGQ4863sm.jpg

Rumex paucifolius

Rumex paucifolius, Collection No. 595.

Photograph taken 16 June 2010. Collection made in Sagehen Meadow.

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        images/IMGP0144sm.jpg

Rumex triangulivalvis

Coll. No. 2670, Rumex triangulivalvis

Photographed 31 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Rumex triangulivalvis (Danser) Rech. f.  Triangular-Valved Dock.

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, crossed west to east by Bull Gulch, north side of gulch, 386 m. west from the eastern boundary, 1.51 km. north northwest of the main gate, and 23.1 km. north northwest of the GNIS location of Golden. 39.9085°N, 105.2797°W. WGS 1984 Elev. 1994 m. Main channel of the gulch, near the north bank. 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 2670. 7-Aug-2021

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        images/IMGQ5576sm.jpg

Coll. No. 1009, Rumex triangulivalvis

Photographed 19 February 2015.

Coll. No. 1009, 22 July 2013, characters observed while keying: Perennial, to 15 cm., growing beside distributary of Mill Creek; Main stem, herbaceous (not clearly woody), decumbent; Leaves, cauline, lance-linear arcuate, 80 mm. × 10 mm. wide, 8 × longer than wide, margins wavy, adaxial surface sparsely short-hairy, esp. mid-rib, abaxial sparsely cobwebby, esp. mid-rib, petiole, 45 mm., not jointed; Inflorescence, monoecious, axillary, dense, interrupted; Flower, inner perianth lobes 3, 3 mm. × 1.8 mm. wide, triangular, notched bear base, tip acute, tubercule (callosity) 1 × 3 inner lobes = 3, ± equal, width 0.3 mm., 1/6 lobe, minute warty, outer perianth lobes mostly deteriorated and easily overlooked; Stamens, 6, yellow; Styles, 3, fringed; Seed, 3-angled, 1.4 mm × 0.7 mm. wide, brown.

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        images/IMGQ0175sm.jpg

Coll. No. 1009, Rumex triangulivalvis

Photographed 19 February 2015.

Coll. No. 1009, 22 July 2013, characters observed while keying: Perennial, to 15 cm., growing beside distributary of Mill Creek; Main stem, herbaceous (not clearly woody), decumbent; Leaves, cauline, lance-linear arcuate, 80 mm. × 10 mm. wide, 8 × longer than wide, margins wavy, adaxial surface sparsely short-hairy, esp. mid-rib, abaxial sparsely cobwebby, esp. mid-rib, petiole, 45 mm., not jointed; Inflorescence, monoecious, axillary, dense, interrupted; Flower, inner perianth lobes 3, 3 mm. × 1.8 mm. wide, triangular, notched bear base, tip acute, tubercule (callosity) 1 × 3 inner lobes = 3, ± equal, width 0.3 mm., 1/6 lobe, minute warty, outer perianth lobes mostly deteriorated and easily overlooked; Stamens, 6, yellow; Styles, 3, fringed; Seed, 3-angled, 1.4 mm × 0.7 mm. wide, brown.

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        images/IMGQ0178sm.jpg

Coll. No. 1009, Rumex triangulivalvis

Photographed 19 February 2015.

Coll. No. 1009, 22 July 2013, characters observed while keying: Perennial, to 15 cm., growing beside distributary of Mill Creek; Main stem, herbaceous (not clearly woody), decumbent; Leaves, cauline, lance-linear arcuate, 80 mm. × 10 mm. wide, 8 × longer than wide, margins wavy, adaxial surface sparsely short-hairy, esp. mid-rib, abaxial sparsely cobwebby, esp. mid-rib, petiole, 45 mm., not jointed; Inflorescence, monoecious, axillary, dense, interrupted; Flower, inner perianth lobes 3, 3 mm. × 1.8 mm. wide, triangular, notched bear base, tip acute, tubercule (callosity) 1 × 3 inner lobes = 3, ± equal, width 0.3 mm., 1/6 lobe, minute warty, outer perianth lobes mostly deteriorated and easily overlooked; Stamens, 6, yellow; Styles, 3, fringed; Seed, 3-angled, 1.4 mm × 0.7 mm. wide, brown.

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Rumex utahensis

Coll. No. 2729, Rumex utahensis.

Photographed 15 February 2022.

Plants of Colorado
Polygonaceae

Rumex utahensis Rech. f.  Utah Willow Dock.

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, 106.5418°W. WGS 1984 Elev. 3238 m. 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 2729. 18-Aug-2021

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Date and time this article was prepared: 9/22/2024 4:53:20 PM