Eastern Mojave Vegetation

Detailed Area Plant List for Ranson/Edwards Homestead Open Space Park, Jefferson County, United States.

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Edited by Tom Schweich

This list is assembled from personal collections, herbarium vouchers, and published lists. For California, much of the data is provided by the participants of the Consortium of California Herbaria as indicated by a single dagger “†.” Their web site is at: (http://ucjeps.berkeley.edu/consortium/). For Colorado, much of the data is provided by the Southwest Environmental Information Network as indicated by a double dagger “‡,” which web site is found at (http://swbiodiversity.org). See their respective websites for copyright information and recommended citation formats.

For a complete list of Locations included in this Area List, see the Locations Included section, below.

For a check list, please see: Check List for Ranson/Edwards Homestead Open Space Park, Jefferson County, United States.

Pinaceae

Pinus ponderosa Laws.  Ponderosa Pine. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Upper slopes just below the railroad tracks. Stevens parcel immediately south of the Ranson/Edwards parcel, 400 m west northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1316. 14 Apr 2016. ( JCOS s.n. KHD ) .

Apiaceae

Harbouria trachypleura (A. Gray) J.M. Coult. & Rose.  (Syn: Thaspium trachypleurum A. Gray ) Whiskbroom Parsley. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, On break in slope above reservoir. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 620 m. north of Plainview Road. Tom Schweich 1380. 29 May 2016. ( CS JCOS s.n. KHD ) Among grasses and ponderosa pines, near top of south-facing slope. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, then 2.4 mi. northerly on Plainview Road, then 40 m. or so south of the road. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1408. 10 Jun 2016. ( EIU Golden JCOS s.n. KHD ) . .

Lomatium orientale J.M. Coult. & Rose.  Northern Idaho Biscuitroot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Occasional on drier or more-exposed surfaces. On a somewhat rocky alluvial terrace, north side of an unnamed creek, 1.2 miles north on Plainview Road from the intersection with Colorado State Highway 72, Coal Creek Canyon Road, and then 200 m east across the field. Tom Schweich 1077. 23 Mar 2015. ( JCOS s.n. ) Gentle east-facing grassy slopes. Stevens parcel just south of Ranson/Edwards parcel, about 180 m. northwest of the Plainview Road bridge over Coal Creek, 3.65 km west southwest of the GNIS location of Rocky Flats, Tom Schweich 1326. 5 May 2016. ( CAS CS JCOS s.n. KHD OBI83174 UC UCR ) .

Apocynaceae

Apocynum ×floribundum Greene.  Dogbane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 35 cm.; Leaves, cauline, opposite, spreading horizontal, petiole 2 mm. + blade 50 mm. × 24 mm. wide, ovate, margin revolute; Sepals, 2.5 mm.; Flowers, bell-shaped, 6 mm. × 5 mm. wide, >2× calyx; Petals, fused at base, tube  mm. + lobes 2 mm., pink, drying purple, lobes erect to spreading, none reflexed; Stamens, 5. Filaments, distinct; More like A. androsaemifolium than A. cannabinum, but it seems to best fit the description of the hybrid A. ×floribundum. (Described from Coll. No. 1442, 22 June 2016.)

- Ranson/Edwards Homestead Open Space Park, In dense vegetation at edge of old road. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 340 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1466. 27 Jun 2016. ( Golden JCOS s.n. KHD ) . .

Apocynum androsaemifolium L.  Bitter Dogbane. CalPhotos. Jepson eFlora. SEINet Taxon.

- Plainview, Location as “Plainsview.” E Bethel Jun 1905. ( CS16335 ) .

Asclepiadaceae

Asclepias speciosa Torr.  Showy Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. .

Asteraceae

Achillea millefolium L.  (Syn: A. lanulosa Nutt. , A. m. L. var. alpicola (Rydb.) Garrett , A. m. L. var. lanulosa (Nutt.) Piper , A. m. L. var. occidentalis DC. ) Common Yarrow. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb to 50 cm.;; Leaves alternate, tendrils absent, finely dissected, aromatic when fresh; Inflorescence, heads enclosed by an involucre, in flat-topped clusters; Phyllaries in 2+ series; Receptacles bearing scale-like bracts (paleate); Perianth in 2 or more whorls, parts in 5s; Phyllaries in 2+ series, not all subtending ray flowers; Flowers open, bisexual, two kinds, some with strap-shaped corollas; Petals fused into a tube; Ray flowers, white, lobe ovate; Disc flowers, white; Stamens = in number to corolla lobes; Ovary inferior. Pistils, 1 per flower (Described from Coll. No. 482, 30 Nov 2011, and Coll. No. 1023, 24 Jul 2013).

- Ranson/Edwards Homestead Open Space Park, Banks of intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 175 m. west of Plainview Road. Tom Schweich 1251. 26 Jul 2015. ( JCOS s.n. KHD UC UCR267464 ) . .

Ambrosia psilostachya DC.  Western Ragweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., woody at base; Leaves opposite below, alternate above, 50 mm. × 22 mm., ovate, pinnately divided; Inflorescence indeterminate, appearing raceme-like, 2 kinds of flowers, pistillate heads many, distal, carpellate heads few, clustered in distal leafy axils; Phyllaries fused into a cup; Receptacle not chaffy; Pappus absent (Described from Coll. No. 1068, 8 Oct 2014).

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. . .

Antennaria rosea Greene.  Rosy Pussytoes. CalPhotos. Jepson eFlora. SEINet Taxon.

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. (Described from Coll. No. 1083, 25 April 2015).

- Ranson/Edwards Homestead Open Space Park, Growing in patches among openings in a grassy, formerly burned open ponderosa pine woodland. 2.1 miles on Plainview Road north of Colorado State Highway 72, then 115 m west. Tom Schweich, with Matt Schweich 1083. 25 Apr 2015. ( JCOS s.n. KHD56958 UC ) . .

Arnica fulgens Pursh.  Foothill Arnica. CalPhotos. Jepson eFlora. SEINet Taxon.

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 sister subtribe Madieae with Madiinae (tarweeds) and Hulseinae, which contains Hulsea and Eatonella, both common in the Mono Lake basin. Described by Pursh in Fl. Am. Sept. 2: 527 “On the banks of the Missouri,” but this is not a Lewis & Clark collection. Perhaps it is a Nuttall collection from 1810. Holotype BM(?), Isotype PH.

- Ranson/Edwards Homestead Open Space Park, Very wet, running water among grasses and sedges. 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. Tom Schweich 1119. 28 May 2015. ( JCOS s.n. KHD56970 UCR265985 ) Moist east-facing slope with deep grass. 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. Tom Schweich 1371. 29 May 2016. ( CAS CS EIU Golden JCOS s.n. KHD OBI83169 ) . .

Artemisia frigida Willd.  Prairie Sagewort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 30 cm., woody at base; Stems many; Leaves alternate, 9 mm., pinnately dissected into 7 parts, silvery hairy; Inflorescence raceme-like, indeterminate, heads 1-3 in axils; Heads have only disk flowers, all alike; Involucre of hairy phyllaries; Phyllaries in 2 series, hairy, not gummy or with tips recurved; Receptacle hairy, not chaffy or bristly; Flowers fertile; Pappus absent; (Described from Coll. No. 1067, 8 Oct 2014).

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. . .

Artemisia ludoviciana Nutt.  Silver Wormwood. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, In a grassy low spot away from established drainage. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 535 m. west of Plainview Road. Tom Schweich 1281. 28 Aug 2015. ( CAS EIU JCOS s.n. KHD OBI UC UCR267478 ) . .

Carduus nutans L.  (Syn: Carduus nutans L. ssp. macrolepis (Peterman) Kazmi ) Nodding Plumeless Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 55 cm., tap-rooted, branched at base; Leaves, basal, withered at flowering, cauline, alternate, decurrent 40 mm. + blade 75 mm. × 25 mm. wide, pinnately lobed, margins spiny; Inflorescence, single heads on spiny tomentose peduncles 2.5-15 cm.; Phyllaries, many graduated series, 9-20 mm. × 1-3 mm. wide, thick at base, mostly green, purplish at margins, mid-vein prominent, tip spiny; Receptacle, alveolate (honeycombed), flat, bristly; Disk flowers, 25 mm., color purple; Pappus, capillary bristles, 18 mm. (Described from Coll. No. 1517, 24 July 2016.)

- Ranson/Edwards Homestead Open Space Park, Northwest-facing slope above ephemeral stream. Introduced. Colorado Noxious Weed List B. 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 560 m. downhill to northeast; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1517. 24 Jul 2016. ( EIU JCOS s.n. KHD OBI ) . .

Centaurea diffusa Lam.  (Syn: Acosta diffusa (Lam.) Soja' k ) White Knapweed. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1233, 20 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Large patch, determination tentative. Tom Schweich 7/26/2015. . .

Cichorium intybus L.  Common Chicory. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 70 m. west of Plainview Road. Tom Schweich 1223. 16 Jul 2015. ( JCOS s.n. KHD UC ) . .

Cirsium arvense (L.) Scop.  (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

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 (Described from Coll. No. 1512, 24 July 2016).

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs, just below the ponderosa pine zone. Lightly grazed in 2016. Colorado Noxious Weed List B. 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. Tom Schweich 1512. 24 Jul 2016. ( EIU Golden JCOS s.n. KHD ) . .

Cirsium undulatum (Nutt.) Spreng.  Wavy Leaved Thistle. CalPhotos. Jepson eFlora. SEINet Taxon.

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. (Described from Coll. No. 1460, 27 June 2016).

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs on a dry alluvial terrace. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.3 mi. north on Plainview Road, then 195 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1460. 27 Jun 2016. ( EIU JCOS s.n. KHD ) . .

Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman.  (Syn: Machaeranthera bigelovii (A. Gray) Greene ) Bigelow's Tansy Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1299, 23 Sep 2015.

- Ranson/Edwards Homestead Open Space Park, Resprouting laterally after having been eaten. Bank below Plainview Road, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.8 mi. north on Plainview Road; 16.0 km. north northwest of the GNIS location of Golden. Tom Schweich 1565. 28 Sep 2016. ( JCOS s.n. KHD ) . .

Erigeron flagellaris A. Gray.  Trailing Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

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. (Described from Coll. No. 1116, 28 May 2015).

- Ranson/Edwards Homestead Open Space Park, Not common in Jefferson County, but with several other nearby collections, e.g., from Rocky Flats and around the mouth of Coal Creek Canyon. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 65 m. east of Plainview Road. Tom Schweich 1116. 28 May 2015. ( CAS JCOS s.n. KHD56969 UC UCR265987 ) . .

Erigeron vetensis Rydb.  Early Bluetop Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

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. (Described from Coll. No. 1421, 10 Jun 2016).

- Ranson/Edwards Homestead Open Space Park, Small ridge between two drainages, grasses and a few ponderosa pines. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.8 mi. north on Plainview Road, then 300 m. southwest upslope.15.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1421. 10 Jun 2016. ( CAS JCOS s.n. KHD OBI UC UCR ) . .

Gaillardia aristata Pursh.  Blanketflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, alternate, entire to toothed; Inflorescence, single heads on peduncles 13-18 cm., flowers of 2 kinds; Phyllaries, 2+ series, 17 mm. × 2.7 mm. wide, lance-linear; Receptacle, epaleate, setae, to 10 mm.; Rays, sterile, corolla, 21 mm. × 10 mm. wide, yellow, deeply 3-lobed; Disk flowers, corolla, 7 mm., purple; Pappus of 6+ aristate scales, 4 mm., awn 2×> body. Described from Coll. No. 1205, 12 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Mostly grasses and forbs; collected with Rosa arkansana and Crataegus succulenta. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the south side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1454. 27 Jun 2016. ( CAS EIU JCOS s.n. KHD ) . .

Grindelia squarrosa (Pursh) Dunal.  Curlycup Gumweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Scattered throughout this field. Tom Schweich 7/29/2015. . .

Gutierrezia sarothrae (Pursh) Britton & Rusby.  Broom Snakeweed. CalPhotos. Jepson eFlora. SEINet Taxon.

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; (Described from Coll. No. 144, 3 Oct 1997: keys easily to Gutierrezia sarothrae. However, inner phyllaries are folded around ovary of ray flowers, a character not mentioned in keys or description.)

- Ranson/Edwards Homestead Open Space Park, Steep south-facing slope, with a prairie rose, blue grama, and artemisia. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 105 m. west of Plainview Road. Tom Schweich 1289. 9 Sep 2015. ( CAS JCOS s.n. KHD OBI83228 UC UCR267486 ) . .

Helianthus pauciflorus Nutt. ssp. subrhomboideus (Rydb.) O. Spring & E. Schilling.  (Syn: Helianthus rigidus (Cass.) Desf. ssp. subrhomboideus (Rydb.) Heiser , Helianthus subrhomboideus Rydb. ) Stiff Sunflower. CalPhotos. Jepson eFlora. SEINet Taxon.

[Description pending verification of determination for Coll. No. 1260. -- 27 Dec 2015] 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. Described from Coll. No. 1260, 26 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 436 m. west of Plainview Road. Tom Schweich 1260. 26 Jul 2015. ( JCOS s.n. KHD UCR267469 ) High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 194 m. northeast of Plainview Road. Tom Schweich 1267. 29 Jul 2015. ( CAS JCOS s.n. KHD OBI UC ) Wet, almost swampy, area on the south side of an intermittent stream. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road, from CO Highway 93, 1.2 mi. north on Plainview Road, then 400 m. east of Plainview road, 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1557. 3 Sep 2016. ( Golden ) . .

Heterotheca foliosa (Nutt.) Shinners.  (Syn: Heterotheca villosa (Pursh) Shinners var. foliosa (Nutt.) V.L. Harms ) Hairy False Goldenaster. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1258, 26 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, North-facing slope, south of the intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 295 m. west of Plainview Road. Tom Schweich 1258. 26 Jul 2015. ( JCOS s.n. KHD UCR267471 ) . [ Treated as H. foliosa (Nutt.) Shinners by Ackerfield (2015), H. villosa (Pursh) Shinners var. foliosa (Nuttall) V. L. Harms by FNANM. H. fulcrata (Greene) Shinners misapplied. ] .

Heterotheca villosa (Pursh) Shinners var. nana (A. Gray) Semple.  (Syn: Chrysopsis canescens DC. var. nana A. Gray ) Hairy False Golden Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm.; Stem, moderately strigose, curved multicellular hairs, proximally eglandular, distally hairy and glandular, but generally hairs exceed glands, Leaves, cauline, alternate, well-distributed along stem, 13-16 mm. × 4-77 mm. wide, elliptic or oblong to obovate or oblanceolate, entire, some margins contorted after drying, 1-veined, distal perpendicular to stems, not densely canescent, generally hairs > glands; Inflorescence heads 1-8 per stem, terminating leafy stems, not subtended by leafy bracts; Heads solitary, with both ray and disk flowers; Phyllaries in 2+ series, unequal, 2-7 mm., tips erect, hairy, glandular; Receptacle epaleate, hemispheric; Rays, sterile, corolla, 9-10 mm. × 1.3 mm. wide, yellow; Disk flowers, corolla, 5.0 mm., yellow; Pappus double, outer narrow scales ≤ 1 mm. (easier to see on mature fruit, in flower will appear as one series of long and short bristles), inner bristles, 5.5-6.5 mm., white, ≥disk flowers, short plumose; Fruit, disk 2.6-3.0 mm. × 1.2 mm. wide, hairy.

- Ranson/Edwards Homestead Open Space Park, Thinly vegetated rocky alluvial terrace. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 60 m. west of Plainview Road. Tom Schweich 1221. 16 Jul 2015. ( JCOS s.n. KHD56974 UC UCR267453 ) . .

Heterotheca villosa (Pursh) Shinners var. villosa.  Hairy False Goldenaster. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1293, 9 Sep 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 185 m. west southwest of Plainview Road. Tom Schweich 1293. 9 Sep 2015. ( JCOS s.n. KHD56975 UC UCR267488 ) . .

Liatris punctata Hook.  Dotted Blazing Star. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1264, 29 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Koeleria macrantha, Hesperostipa comata, Andropogon gerardii, Muhlenbergia montana, Elymus canadensis, Heterotheca villosa, Artemisia frigida, Artemisia ludoviciana, Artemisia campestris, Psoralidum tenuiflorum, Opuntia phaecantha, Grindelia squarrosa United States, Colorado, Jefferson, Take Hwy 93 north 8 miles from Golden, CO; take Hwy 72 west for 3 miles to Plainview Rd; turn right(north); drive 100 yards and park. Plants are on east side of road in large open meadow of Jeffco Open Space. Denise Wilson 25 Nov 2012. ( CHIC17892 ) [ Coordinates are in Jefferson County Open Space, written location description is likely in Boulder Mountain Park and Open Space. ] High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 150 m. northeast of Plainview Road. Tom Schweich 1264. 29 Jul 2015. ( JCOS s.n. KHD56976 UC ) . .

Pseudognaphalium macounii (Greene) Kartesz.  Macoun’s Rabbit-Tobacco. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1257, 26 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Gentle south-facing slope away from intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 260 m. west of Plainview Road. Tom Schweich 1257. 26 Jul 2015. ( JCOS s.n. KHD56977 UCR267470 ) . .

Ratibida columnifera (Nutt.) Woot. & Standl.  (Syn: Rudbeckia columnifera Nutt. ) Upright Prairie Coneflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm., tap-rooted; Leaves, cauline, to 11 cm. × 3 cm. wide, 1-pinnate, pinnae to 39 mm. × 4 mm. wide, some toothed; Inflorescence, single heads per stem, >> leaves; Involucre, 14 mm. diameter; Phyllaries, 1 series, lanceolate, hairy abaxially; Receptacle, cylindric, paleate; Rays, #5, 17 mm., × 13 mm. wide, elliptic-ovate, sterile, corolla yellow; Disk, cylindric, 20-45 mm. × 9-12 mm. wide; Palea, folded around but not enclosing disk flowers; Disk flowers, many, corolla greenish-yellow; Pappus, short crown of scales; Fruit, compressed, but maybe not strongly, ciliate adaxially(!). Described from Coll. No. 1198, 12 July 2015.

- Ranson/Edwards Homestead Open Space Park, Hillside on highest prairie just below ponderosa pine woodland. 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 300 m. northeast, almost to the boundary fence; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1514. 24 Jul 2016. ( EIU JCOS s.n. KHD OBI UC ) . .

Senecio spartioides Torr. & A. Gray.  (Syn: Senecio multicapitatus Greenm. ex Rydb. ) Broomlike Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

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). Described from Coll. No. 1298, 23 Sep 2015.

- Ranson/Edwards Homestead Open Space Park, Not often seen at Ranson/Edwards; these growing among grasses and fallen, burned ponderosa pines. Northwest corner of the Ranson/Edwards parcel, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 2.3 mi. north on Plainview Road, then 40 m. west, 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1564. 8 Sep 2016. ( Golden JCOS s.n. KHD UC ) . .

Solidago missouriensis Nutt.  Missouri Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 35-40 cm., generally glabrous throughout; Leaves, basal, unknown, cauline, alternate, petiole 10-45 cm. + blade 100 mm. × 21-22 mm. wide, reduced above, oblanceolate, margin, sparsely scabrous proximally, serrate distally, glabrous, prominently 3(5)-nerved; Inflorescence, crowded panicle; Pedicels, 1 mm.; Bracts, #2, 1.8 mm.; Involucre, 3.0-4.5 mm. × 3-5 mm. wide, obconic; Phyllaries, 2+ series, 2.2-3.5 mm. × 1 mm. wide, graduated, green, margin chartaceous, veins 1; Receptacle, epaleate, conic; Flowers, 2 kinds; Rays, #12, fertile, tube 2 mm. + blade 2.2 mm., yellow; Disk flower, #12, tube 2.8 mm. + lobes 0.7 mm. = 3.5 mm., yellow; Pappus, capillary bristles, 3.0 mm.; Cypsela, 0.4-0.6 mm., glabrous-sparsely hairy. Described from Coll. No. 1255, 26 Jul 2015, and Coll. No. 1519, 29 Jul 2016. Distinguished in part by its glabrous characters and presence of 3 prominent nerves on leaves. Jepson eFlora notes that S. missouriensis Nutt. Is misapplied to S. spectabilis (D. C. Eaton) A. Gray. FNANM states that, in the west, it can similar to smaller plants of S. spectabilis (13 Sep 2014).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 212 m. west of Plainview Road. Tom Schweich 1255. 26 Jul 2015. ( JCOS s.n. KHD56978 ) Same as Coll. No. 1255, but of shorter stature, perhaps because of distance from intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 240 m. west of Plainview Road. Tom Schweich 1256. 26 Jul 2015. ( CAS UC UCR267468 ) . .

Solidago nana Nutt.  Baby Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1292, 9 Sep 2015.

- Ranson/Edwards Homestead Open Space Park, Few plants, or maybe one plant, few flowering stems, northwest side of ponderosa pine. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 175 m. west southwest of Plainview Road. Tom Schweich 1292. 9 Sep 2015. ( JCOS s.n. KHD56981 ) . .

Solidago rigida L. var. humilis Porter.  Stiff Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1280, 28 August 2015.

- Ranson/Edwards Homestead Open Space Park, Small terrace near an intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 435 m. west of Plainview Road. Tom Schweich 1280. 28 Aug 2015. ( CAS JCOS s.n. KHD56982 UC UCR267479 ) Wet, almost swampy, area on the south side of an intermittent stream. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road, from CO Highway 93, 1.2 mi. north on Plainview Road, then 400 m. east of Plainview road, 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1556. 3 Sep 2016. ( Golden OBI ) . .

Symphyotrichum ericoides (Linnaeus) G. L. Nesom.  (Syn: Virgulus ericoides (Linnaeus) Reveal & Keener ) White Heath Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, woody at base, stems ascending, to 40 cm., eglandular throughout; Leaves, alternate, sessile, narrowly lanceolate, 9 mm. × 1.5 mm. wide, entire, strigose, tip, small white spine; Heads, borne singly along stem, on leafy pedicels; Flowers, of 2 kinds; Involucre, 4 mm.; Phyllaries, 2+ series, 3 mm. × 0.7 mm. wide, white below with 1 brown vein, rhomboid green above, tip with very small spine; Receptacle, epaleate; Rays, corolla, white, 6.0-6.5 mm.; Disc flowers, corolla, yellow, 4 mm.; Pappus, bristles, fine, barbelate, 4 mm. (Described from Coll. No. 1558, 3 September 2016).

- Ranson/Edwards Homestead Open Space Park, 1.1 miles north on Plainview Road from CO State Highway 72, then 400 m. east, to a damp area where an old ranch road first crosses an ephemeral stream. Tom Schweich 1558. 3 Sep 2016. ( JCOS s.n. KHD OBI ) . .

Symphyotrichum laeve (L.) Á. Löve & D. Löve.  Smooth Blue Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 70 cm., rhizomatous or rooting at nodes; Leaves, alternate, cauline, linear, 120 mm. × 8 mm. wide, reduced and more lanceolate above, glabrous, margin very shallowly toothed and lightly ciliate, entire above; Inflorescence, panicle with 1° and 2° branches; Heads borne singly on 10-15 mm. pedicels, 8 mm. × 10 mm. wide; Phyllaries in 3+ graduated series, 3-10 mm. margins white to tips diamond-shaped green, all tips acute, few hairs; Receptacle epaleate; Flowers of 2 kinds; Ray flowers, fertile, tube green 3.5 mm. + blade blue 9.5 mm. × 1.5 mm, spatulate-oblanceolate; Disk flowers, outer reddish-purple, inner yellow, corolla, 6.5 mm.; Pappus, bristles, 5 mm.; Cypsela, 3 mm × 1.2 mm. wide, glabrous, veins, 4, prominent. Described from Coll. No. 1278, 20 August 2015. Only var. geyeri is recognized in Colorado per Weber & Wittmann (2012) and Ackerfield (2015). However, the green apical zones of these phyllaries are more diamond-shaped than lanceolate suggesting var. laeve, especially if the phyllaries are described as strongly unequal. The possibility that these plants should be assigned to var. laeve or that var. geyeri should be considered a synonym of var. laeve is discussed in FNANM.

- Ranson/Edwards Homestead Open Space Park, Northeast slope, with Gentiana, Monardella, and a mat-forming Asteraceae. Ambiguous as to variety name, as also noted on Coll. No. 1278. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 175 m. west of Plainview Road. Tom Schweich 1291. 9 Sep 2015. ( CAS JCOS s.n. KHD56984 OBI UC UCR267487 ) High plains above Rocky Flats, 16.7 km north northeast of Golden, 2.4 miles north of CO State Highway 72 on Plainview Road, then 250 m. northwest of Plainview Road on a social trail. Tom Schweich, with Sofia Albaladejo 1278. 20 Aug 2015. ( CAS JCOS s.n. KHD UC UCR267476 ) . .

Symphyotrichum porteri (A. Gray) G.L. Nesom.  (Syn: Aster porteri A. Gray ) Smooth White Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1266, 29 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 163 m. northeast of Plainview Road. Tom Schweich 1266. 29 Jul 2015. ( JCOS s.n. KHD UC ) Sparse ponderosa pine forest. High plains above Rocky Flats, 16.7 km north northeast of Golden, 2.4 miles north of CO State Highway 72 on Plainview Road, then 250 m. northwest of Plainview Road on a social trail. Tom Schweich 1279. 20 Aug 2015. ( CAS JCOS s.n. KHD OBI83213 UCR267477 ) Shade of ponderosa pine. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 125 m. west of Plainview Road. Tom Schweich 1290. 9 Sep 2015. ( CAS JCOS s.n. KHD OBI ) . .

Taraxacum officinale F. H. Wigg.  (Syn: T. laevigatum (Willd.) DC. ) Common Dandelion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, One of the earliest flowers in bloom, collected with Viola nuttallii. Stevens parcel immediately south of the Ranson/Edwards parcel, 115 m north of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1314. 14 Apr 2016. ( JCOS s.n. KHD ) . .

Townsendia hookeri Beaman.  Hooker's Townsend Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

Low growing perennial, from a woody caudex, acaulescent, to 2.5 cm.; Leaves, linear to narrowly oblanceolate, 30 mm. × 1.2 mm. wide, appressed hairy or strigose, eglandular; Peduncle, 3 mm., spreading hairy, eglandular; Heads, solitary, sessile (or apparently so), 12 mm. × disc (10)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, outer hairy, tipped by a tuft of tangled cilia, inner, margins and tip ciliate, but not tangled; Receptacle epaleate, flat; Ray flowers, #25-30, fertile (pistillate), cypsela 3.3 mm., tuft of glandular hairs at base, pappus of 1 series white bristles, 4-5 mm., corolla, 10-11 mm., white to lavender; Disc flowers, bisexual, cypsela, 3.7 mm., glandular hairy, pappus 1 series white bristles, 4-6 mm., corolla, 3.8-4.5 mm., yellow, lobes dark. (Described from Coll. No. 1087, 25 Apr 2015, and Coll. No. 1304, 9 April 2016) The disc pappus sometimes being longer than the ray pappus could lead one to T. incana in Ackerfield (2015). Perhaps caulescence would be a better character, as used by Weber & Wittmann (2012).

- Ranson/Edwards Homestead Open Space Park, Rocky alluvial terrace. Stevens parcel immediately south of the Ranson/Edwards parcel, 360 m northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1315. 14 Apr 2016. ( CS Golden JCOS s.n. OBI ) In the shade of a mature ponderosa pine, gentle slope, rocky alluvial soil, 460 meters northeast of the GNIS location of Plainview, 2.2 miles generally north on Plainview Road from Colorado State Highway 72, then 70 m west. Tom Schweich, with Matt Schweich 1087. 25 Apr 2015. ( JCOS s.n. KHD56956 UC ) . .

Tragopogon dubius Scop.  (Syn: Tragopogon dubius Scop. ssp. major (Jacq.) Vollman ) Yellow Salsify. CalPhotos. Jepson eFlora. SEINet Taxon.

Peduncle inflated distally, flowers yellow, phyllaries in 1 overlapping series, ligules 3-5 mm. shorter than phyllaries.

- Ranson/Edwards Homestead Open Space Park, Dry upper banks on south side of creek. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 65 m. east of Plainview Road. Tom Schweich 1115. 28 May 2015. ( JCOS s.n. KHD56968 UCR266088 ) .

Boraginaceae

Lappula occidentalis (S. Watson) Greene var. cupulata (A. Gray) Higgins.  (Syn: Lappula redowskii (Hornem.) Greene var. cupulata (A. Gray) M. E. Jones ) Crowned Stickseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Among short grasses and forbs on a drier, gravelly alluvial ridge. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1378. 29 May 2016. ( EIU JCOS s.n. KHD ) . .

Lithospermum incisum Lehm.  Narrowleaf Stoneseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains merging into Ponderosa pine woodland, 2.2 miles on Plainview Road north of CO State Highway 72, then 20 m. west of Plainview Road, 16.3 km north northwest of Golden. Tom Schweich 1124. 28 May 2015. ( KHD56964 ) . .

Mertensia lanceolata (Pursh) DC.  Prairie Bluebells. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Wet alluvial slope above Coal Creek, Stevens parcel immediately south of Ranson/Edwards parcel, 3.55 km west southwest of the GNIS location of Rocky Flats Tom Schweich 1325. 5 May 2016. ( CAS JCOS s.n. KHD ) .

Brassicaceae

Alyssum simplex Rudolphi.  (Syn: Alyssum minus Rothm. , Alyssum parviflorum Fisch. ex M.Bieb. ) European Madwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, tap-rooted, to 12-30 cm., stellate hairy throughout (typically doubly branched and 8-pointed); Stem branched at base, ascending; Leaves basal, withered at flowering, appear compound, cauline, alternate, 14-28 mm. × 3.5-5.0 mm., oblanceolate, margin entire, tip acute, sessile or vaguely short-petioled; Inflorescence not bracted; Pedicels, in fruit, 4.5 mm.; Sepals, 4, 2 mm. × 0.7 mm. wide, deciduous in fruit; Petals 2.9-3.0 mm., yellow fading white,clawed, entire to tip slightly notched; Stamens, 2.5-2.6 mm.; Filaments, 2.3 mm., winged proximal 1.5-1.8 mm., not toothed; Style persistent, 1.3 mm., few hairs at base; Fruit round, 3.5-5.0 mm. × 5.6 mm. wide, margin entire, compressed parallel to the replum, hairy, hairs thinning as fruit matures; Ovules, 4 (most keys and descriptions say 2 when they give a specific number, but the genus is described as having 1-2[4] ovules). (Described from Clyde Golden, 25 Jun 2011, Coll. No. 1090, 30 Apr 2015, and Coll. No. 1367, 24 May 2016).

- Ranson/Edwards Homestead Open Space Park, Roadside and among short grasses, older terrace of Coal Creek. Tom Schweich 1597. 4 May 2017. ( Golden ) . .

Brassicaceae  .  Mustard Family. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 1599. 4 May 2017. ( Golden ) . .

Draba .  Draba. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Small white crucifer, no fruit. Tom Schweich 4/14/2016. . .

Draba reptans (Lam.) Fernald.  Carolina Whitlow Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, from slender taproot, to 10 cm.; Leaves, basal, withered in fruit, entire, cauline, 0-1 pair per stem, 6 mm. × 2 mm. wide, entire, hairs branched; Pedicels, glabrous; Flowers, petals, color unknown; Fruit, distributed in upper ⅕-⅓ of rachis (Described from Coll. No. 1376, 29 May 2016).

- Ranson/Edwards Homestead Open Space Park, Growing among short grasses and forbs. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1376. 29 May 2016. ( KHD ) . .

Erysimum capitatum (Hook.) Greene.  Sanddune Wallflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial or biennial, to 45 cm.; Stems, proximal not woody; Leaves, basal and cauline, basal, petiole + blade, 100 mm. × 3 mm. wide, margin sparsely toothed, proximal cauline leaves, adaxial surface, hairs 2 & 3 rayed; Pedicels, 3-5 mm., elongating as flower matures; Petals, yellow, 16 mm. × 4.5 mm. wide; Fruit, unknown; Seeds, unknown (Described from Coll. No. 206, 2 Apr 2000).

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 470 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1412. 10 Jun 2016. ( JCOS s.n. KHD ) . .

Lepidium campestre (L.) W. T. Aiton.  Field Pepperweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 470 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1413. 10 Jun 2016. ( CS JCOS s.n. KHD ) . .

Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch.  (Syn: Noccaea montana (L.) F. K. Meyer , Thlaspi montanum L. var. montanum ) CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herbs, with basal leaves and flowering stems to 8 cm., glabrous, prior year flowering stems persistent; Leaves, basal, 8 mm. × 4 mm. wide, ±obovate, margin entire, abaxially purple, petiole 5 mm., cauline, 8 mm. × 5 mm. wide, base auriculate, margin entire; Flowers, white, fading purple; Petals 4.5 mm.; Fruit, a silicle, 5.5-7.0 mm. × 2.5-3.0 mm. wide, obcordate, winged distally (Described from Coll. No. 1085, 25 April 2015, and Coll. No. 1328, 5 May 2016).

- Ranson/Edwards Homestead Open Space Park, Few plants in the shade of ponderosa pine. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, 3.71 km west southwest of the GNIS location of Rocky Flats. Tom Schweich 1328. 5 May 2016. ( UC ) Common in shade of ponderosa pines among rocks; flat, disturbed area above Coal Creek, with much broken glass. Stevens parcel immediately south of Ranson/Edwards parcel, 1.64 km south southeast of the GNIS location of Plainview, 3.48 km west southwest of the GNIS location of Rocky Flats. Tom Schweich 1329. 5 May 2016. ( CAS OBI83177 UCR ) Openings in grassy, recently burned, ponderosa pine woodland, about 520 meters northeast of Plainview, 2.1 miles north on Plainview Road from Colorado State Highway 72, then 165 m west. Tom Schweich, with Matt Schweich 1085. 25 Apr 2015. ( JCOS s.n. KHD56957 ) . .

Physaria montana (A. Gray) Greene.  (Syn: Lesquerella montana (A. Gray) S. Watson ) Mountain Bladderpod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, rosette to 5 cm. dia., flowering stems to 14 cm., not in alpine environment, eastern slope, hairs stellate throughout; Leaves, basal, rosette, 9 mm. × 6.5 mm., ovate, entire, petiole, 12 mm., cauline, 10 mm., appearing secund, narrowly oblanceolate; Inflorescence, exceeding leaves; Pedicels, in fruit, ascending; Fruit, 5 mm. × 2 mm., ovate-elliptic, hairs stellate, apex entire (not notched, although these immature). (Described from Coll. No. 1081, 23 Apr 2015).

- Ranson/Edwards Homestead Open Space Park, Among short grasses and forbs on a drier, gravelly alluvial ridge. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1377. 29 May 2016. ( EIU JCOS s.n. KHD ) .

Cactaceae

Echinocereus viridiflorus Engelm.  (Syn: Echinocereus chloranthus (Engelm.) J.N.Haage , Echinocereus viridiflorus Engelm. var. chloranthus (Engelm.) Backeb. ) Nylon Hedgehog Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Several cacti in bloom on this date. Tom Schweich 5/29/2016. Tom Schweich 7/29/2015. . .

Opuntia macrorhiza Engelm.  Twistspine Pricklypear. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, South-facing slope above intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 295 m. west of Plainview Road. Tom Schweich 1259. 26 Jul 2015. ( KHD ) . .

Pediocactus simpsonii (Engelm.) Britton & Rose.  (Syn: Echinocactus simpsonii Engelm. , Pediocactus simpsonii (Engelm.) Britton & Rose var. minor (Engelm.) Cockerell ) Mountain Ball Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 5/5/2016. Tom Schweich 4/14/2016. Large. Tom Schweich 9/3/2016. In somewhat rocky alluvial montain mahogany and ponderosa pine woodland, gentle slope, 400 meters northwest of Plainview. Tom Schweich, with Matt Schweich 1086. 25 Apr 2015. ( Cactus, not collected. ) .

Campanulaceae

Campanula rotundiflora L.  Harebell. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, basal, ?, cauline, alternate, ±lance-linear, 52 mm. × 2.5 mm. wide; Inflorescence, solitary and loose racemes; Pedicel, 9 mm.; Calyx, tube 2.5 mm. + 5 lobes 2.5 mm. = 5.0 mm.; Corolla, 13 mm, blue-purple; Capsule, nodding, 5.5 mm. × 4.5 mm. wide, opening by pores near the base. Described from Coll. No. 1246, 24 July 2015.

- Ranson/Edwards Homestead Open Space Park, North slope along imtermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 204 m. west of Plainview Road. Tom Schweich 1254. 26 Jul 2015. ( CAS JCOS s.n. KHD UCR267467 ) .

Caprifoliaceae

Symphoricarpos occidentalis Hook.  Western Snowberry. CalPhotos. Jepson eFlora. SEINet Taxon.

Woody perennial to 50 cm., forming dense colonies in moist open swales, [spreading by long sparsely-branched rhizomes,] Twigs without lenticels, minutely hairy when young; Leaves opposite, ovate, to 7 cm. × 5 cm. wide, reduced above, thick, approaching leathery, pinnately veined, upper surface glabrous, lower few short white hairs, margin slightly wavy, slightly rolled under, sparsely curved hairy; Petioles to 7 mm.; Inflorescence axillary (and terminal?); Floral bracts triangular, 3 mm.; Flowers in dense axillary clusters, bisexual, ±radial, possibly slightly bilateral, 2 or more whorls; Corolla fused at base, tube 2-3 mm., throat with recurved hairs, lobes 5, 2.0-3.5 mm, slightly longer than tube, hairy within at level of stamen insertion, white with magenta mottling; Stamens 5, alternate, exserted or barely exserted; Filaments, 3.3-3.6 mm., tapered; Anthers versatile; Ovary inferior Pistil 1; Style exserted or barely exserted; Stigma entire; Fruit a berry, green when young, mature color and size unknown. (Described from specimen seen on Green Mountain, 2 August 2014 and Coll. No. 1252, 26-Jul-2015).

- Ranson/Edwards Homestead Open Space Park, Banks of an intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 175 m. west of Plainview Road. Tom Schweich 1252. 26 Jul 2015. ( JCOS s.n. KHD UCR267465 ) Relatively moist area, but not quite a wetland. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 870 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1285. 28 Aug 2015. ( JCOS s.n. KHD UC UCR267482 ) .

Caryophyllaceae

Cerastium arvense L. ssp. strictum Gaudin.  (Syn: Cerastium strictum L ) Field Chickweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Common early-flowering perennial, to 20 cm.; Leaves, opposite, broadly linear, 15 mm. × 3 mm. wide, stipules absent, tufts of leaves in lower axils; Sepals free; Petals >> sepals, white, notched; Styles (4)5.

- Ranson/Edwards Homestead Open Space Park, East-facing grassy slopes. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, and 3.65 km south southwest of Rocky Flats. Tom Schweich 1327. 5 May 2016. ( CS Golden JCOS s.n. KHD ) . .

Dianthus armeria L.  Deptford Pink. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Several plants among fallen trunks of Ponderosa pine. Location is 35 m. west of west boundary of open space property. Tom Schweich 8/20/2015. . .

Eremogone fendleri (A. Gray) Ikonnikov.  (Syn: Arenaria fendleri A. Gray ) Fendler's Sandwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, tufted, to 30 cm.; Stem, proximal glabrous, distal short glandular hairy “peg-like hairs”; Leaves, cauline, 50 mm. × 0.5 mm. wide, linear to needle-like, erect to appressed, tip small spinulose, stipules absent; Inflorescence, open cyme; Pedicels, 3-8 mm.; Sepals, #5 distinct, 4.5-5.0 mm. × 1 mm. wide, glandular hairy; Petals, white, 5 mm., entire; Stamens, #10; Anthers, purple; Styles, #3. Described from Coll. No. 1270, 29 Jul 2015, and Coll. No. 1374, 29 May 2016.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 212 m. northeast of Plainview Road. Tom Schweich 1270. 29 Jul 2015. ( JCOS s.n. KHD ) High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 310 m. north of Plainview Road. Tom Schweich 1374. 29 May 2016. ( CAS UC UCR ) Mixed short grasses and forbs. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. northerly on Plainview Road, then 470 m. southwest of the road upslope. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1411. 10 Jun 2016. ( CS EIU JCOS s.n. OBI ) . .

Paronychia jamesii Torr. & A. Gray.  Jame's Nailwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial erect subshrub, to 15 cm.; Leaves, cauline, opposite, 10 mm., linear, pointed, stipules, 4-5 mm., papery; Inflorescence, many-flowered cyme; Sepals, #5, 2.3 mm., greenish, awn-tipped; Petals, absent. Described from Coll. No. 1263, 29 July 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 130 m. northeast of Plainview Road. Tom Schweich 1263. 29 Jul 2015. ( JCOS s.n. KHD ) . .

Silene .  Catchfly. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, In dense vegetation at edge of old road. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 345 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1465. 27 Jun 2016. ( Golden ) . .

Silene vulgaris (Moench) Garcke.  Maidens Tears. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, erect, to 55 cm., generally glabrous throughout; Stem, lacking dark sticky band, most, i.e., 7/8 stems, simple unbranched; Stipules, 0; Leaves, basal, unknown, cauline, opposite, 44 mm. × 6-7 mm. wide, sessile, bases connate; Calyx, tube 8 mm. × 5.5 mm. wide + lobes 2 mm. somewhat inflated, many green veins, not particularly prominent; indented around peduncle (when pressed and dry); Corolla, 13 mm., limb 6 mm., white; Stamens, #10, exserted; Filaments, white (definitely not purple); Seeds, 1 mm., brown, papillate. (Described from Coll. No. 1463, 27 June 2016).

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs beside the old road, on the accessible side of a gate that prevents cows from going down to Coal Creek. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 250 m. east on old ranch road; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1463. 27 Jun 2016. ( CAS Golden JCOS s.n. KHD UC ) .

Convolvulaceae

Convolvulus arvensis L.  Field Bindweed. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Thinly vegetated rocky alluvial terrace. Colorado Noxious Weed List C. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 60 m. west of Plainview Road. Tom Schweich 1220. 16 Jul 2015. ( JCOS s.n. KHD UC UCR267687 ) .

Fabaceae

Amorpha fruticosa L.  False Indigo. CalPhotos. Jepson eFlora. SEINet Taxon.

Woody shrub, to 2 m.; Leaves, alternate, compound, leaflets, #13, 26 mm. × 16 mm. wide, elliptic-ovate, mid-rib extended as a short slender mucro, eglandular, short soft hairy, sparse adaxially, less sparse abaxially; Inflorescence, racemes, Calyx, 3 mm., minutely hairy, few gland-dotted distally; Flowers, purple; Banner, 6 mm. (Described from Coll. No. 1464, 27 June 2016).

- Ranson/Edwards Homestead Open Space Park, Xeric mountain foothills with alluvial water flow. Associated Species: Crataegus erythropoda, Prunus virginiana, Bouteloua hirsute, Symphoricarpos rotundifolius, Prunus americana. United States, Colorado, Jefferson, 1 mile north on Plainvierw Road, north of Hwy 72 and Golden, CO and 1 1.2 miles west of Hwy 93. Boulder City Open Space and Mountain Parks land along the Coal Creek creek bed. Denise Wilson 7 Oct 2011. ( CHIC16921 ) Habitat: High plains seasonally dry creek bed. Associated Species: Populus deltoides, Salix sp., Symphoricarpos occidentalis, Prunus virginiana, Hypericum perforatium, Rhus trilobata, Rosa woodsii, Elymus canadensis, Heterotheca villosa, Artemisia frigida, A. campestris United States, Colorado, Jefferson, Take Hwy 93 north 8 miles from Golden, CO, take Hwy 72 west for 1.7 miles to Plainview Rd; turn right (north) cross bridge, drive 1 mile and park. Plants are in the Coal Creek dry creek bed to the east. Denise Wilson 24 Nov 2012. ( CHIC17891 ) Lining a small ephemeral stream. Tom Schweich 7/24/2016. Growing in roadside ditch. Tom Schweich 9/8/2016. In dense vegetation of mostly willows on the edge of an abandoned channel of Coal Creek. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 350 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1464. 27 Jun 2016. ( CAS EIU JCOS s.n. KHD OBI ) . .

Amorpha nana Nutt.  Dwarf False Indigo. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Habitat: In a recent burn area. Locally common. USA, Colorado, Jefferson County, Ranson/Edwards, JEFCO open space property. N. of gravel road as it curves W and uphill. Verbatim Coordinates: NAD83 13 0476478E 4416476N, Eldorado Springs quad T2S R70W SEC7. D. Hazlett, Pam Smith, and Rich Scully 13965. 15 Sep 2011. ( KHD52809 ) Several plants. Tom Schweich 9/8/2016. Tom Schweich 9/8/2016. 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 180 m. northwest; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1513. 24 Jul 2016. ( JCOS s.n. KHD ) . .

Astragalus agrestis Douglas ex G. Don.  Purple Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon.

Coll. No. 1398, 8 June 2016, characters observed: Perennial herb, to 15 cm., caulescent, basifixed straight appressed hairy throughout; Leaves, cauline, alternate, stipules, 5 mm., connate opposite petiole, compound, odd-pinnate, leaflets, #13, 8 mm. × 2 mm. wide, straight hairy, tip round; Inflorescence, upright ovoid cluster; Calyx, tube 4.5 mm. + lobes 3.5 mm. = 8 mm., mix of white and black hairs; Flowers, zygomorphic, 11 mm., blue-purple; Style, 7 mm., persistent; Legume, immature, 5 mm. × 1.7 mm. wide, stipe very short (0.4 mm.?), dense long straight soft hairy (Described from Coll. No. 1398, 8 June 2016).

- Ranson/Edwards Homestead Open Space Park, North-facing slope with grasses and ponderosa pines. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 2.4 mi. generally north on Plainview Road, then 130 m. southeast across a small drainage, 15.95 km. north northwest of the GNIS location of Golden. Tom Schweich 1422. 10 Jun 2016. ( CS Golden JCOS s.n. KHD UC ) . .

Astragalus eucosmus B. L. Rob.  Elegant Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon.

Coll. No. 1415, 10 June 2016, characters observed: Perennial, caulescent, to 40 cm., hairs basifixed throughout; Stem, not flexuous or zigzag distally, light brown above, purplish at base; Stipules, 6 mm., connate opposite petiole proximally; Leaves, cauline, alternate, compound, leaflets, #15, 15 mm. × 3.3 mm. wide, glabrous adaxially, hairy abaxially; Inflorescence, axillary racemes, flowers, #21; Calyx, tubes 3 mm. + lobes 1 mm. = 4 mm.; Flowers, spreading, 10 mm., ochroleucous proximally, blue distally, banner, 9.5 mm., wings, 8 mm., keel, 6 mm.; Fruit, unknown, immature, developing short stipitate and hairy (Described from Coll. No. 1415, 10 June 2016).

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 455 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1415. 10 Jun 2016. ( CS Golden JCOS s.n. KHD ) . .

Dalea purpurea Vent.  Purple Prairie Clover. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. . .

Glycyrrhiza lepidota Pursh.  American Licorice. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Thick vegetation along intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 67 m. west of Plainview Road. Tom Schweich 1222. 16 Jul 2015. ( CAS JCOS s.n. KHD OBI UC UCR267454 ) . .

Oxytropis lambertii Pursh.  Purple Locoweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, acaulescent, mostly dolabriform hairs (one arm much shorter than the other); Leaves, basal, pinnately compound, leaflets #17, terminal leaflet present; Inflorescence, raceme, peduncle 30 cm., pedicels very short; Bracts, 7 mm. × 1.6 mm. wide, green, lanceolate; Calyx, tube 7 mm. + lobes 4 mm. = 11 mm.; Flower, zygomorphic, various shades of magenta to purple, banner, 17 mm., wings, 16 mm., keel, 13 mm., blades united enclosing stamens, recurved beak; Stamens, #10, diadelphous (Described from Coll. No. 1385, 1 June 2016).

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 450 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1416. 10 Jun 2016. ( JCOS s.n. KHD UC ) . .

Psoralidium tenuiflorum (Pursh) Rydb.  (=Pediomelum tenuiflorum (Pursh) A. N. Egan) Slimflower Scurfpea. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Dry alluvial terrace above watercourse. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 215 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1459. 27 Jun 2016. ( CAS EIU JCOS s.n. KHD ) . .

Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richardson var. divaricarpa (A. Nelson) Isely.  (=Thermopsis divaricarpa A. Nelson) Prairie Thermopsis. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Small ridge between two watercourses. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 335 m. north of Plainview Road. Tom Schweich 1375. 29 May 2016. ( EIU Golden JCOS s.n. KHD ) . .

Trifolium pratense L.  Red Clover. CalPhotos. Jepson eFlora. SEINet Taxon. Introduced, per Ackerfield (2015).

Perennial herb, erect, to 50 cm., hairs not hooked at tips; Stem, spreading hairy; Stipules, 21 mm. × 5 mm. wide, connate, scarious with several green nerves; Leaves, ternately compound, leaflets, 38 mm. × 20 mm. wide, margins slightly wavy tip short mucronate (easier to see on young leaves), both sides long wavy hairy; Heads, sessile, subtended by stipules and a pair of leaves, many flowers; Fruit, unknown. Introduced. (Described from Coll. No. 1458, 27 June 2016.)

- Ranson/Edwards Homestead Open Space Park, On the edge of a spring-fed swale close to an ephemeral stream. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1458. 27 Jun 2016. ( Golden ) .

Gentianaceae

Frasera speciosa Griseb.  (Syn: Swertia radiata (Kellogg) Kuntze ) Elkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. Collected only four flowers and two leaves because this was a single plant out on the lone prairie. High plains above Rocky Flats, 15.3 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 190 m. east of Plainview Road, 100 m. north of creek. Tom Schweich 1122. 28 May 2015. ( KHD56973 ) About twelve plants seen, about half of which will bloom this year. Openings in grassy, recently burned, ponderosa pine woodland, about 520 meters northeast of Plainview. Tom Schweich, with Matt Schweich 1084. 25 Apr 2015. ( Not collected, immature. ) . .

Gentiana affinis Griseb.  (Syn: Pneumonanthe oregana (Engelm. ex A. Gray) Greene ) Pleated or Rocky Mountain Gentian.. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. Open grasslands in the highest part of the park. Found, with increasing density, from Plainview Road up to the Union Pacific railroad tracks. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 750 m. west of Plainview Road. Tom Schweich 1283. 28 Aug 2015. ( JCOS s.n. ) Open grasslands in the highest part of the park. Found, with increasing density, from Plainview Road up to the Union Pacific railroad tracks. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 825 m. west of Plainview Road. Tom Schweich 1284. 28 Aug 2015. ( KHD UCR267481 ) .

Geraniaceae

Geranium caespitosum James.  Pineywoods Geranium. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 65 m. west of Plainview Road. Tom Schweich 1226. 16 Jul 2015. ( CAS EIU JCOS s.n. KHD OBI ) .

Hypericaceae

Hypericum perforatum L.  Common St. John's Wort. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

Treated in family Clusiaceae by Ackerman (2015).

- Ranson/Edwards Homestead Open Space Park, Adjacent to intermittent stream. Colorado Noxious Weed List C species. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 102 m. west of Plainview Road. Tom Schweich 1250. 27 Jul 2015. ( JCOS s.n. KHD UC UCR267473 ) .

Lamiaceae

Lycopus americanus W. P. C. Barton.  American Bugleweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Growing in banks of ephemeral creek, below a small reservoir. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 860 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1287. 28 Aug 2015. ( Golden ) . .

Mentha arvensis L.  Wild Mint. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb; Stem erect; Internodes visible; Leaves ±equal in size upward; Infloresence axillary clusters distributed along stem; Calyx 5-lobed, radially symmetrical, lobes and tips equally hairy; Flowers radial, 3 mm; Stamens exserted, fertile 4; Style exserted (Described from Coll. No. 718, 20 Nov 2011).

- Ranson/Edwards Homestead Open Space Park, In dense vegetation beside intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 75 m. west of Plainview Road. Tom Schweich 1224. 16 Jul 2015. ( JCOS s.n. KHD UC ) . .

Monarda fistulosa L.  Wild Bergamot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. Tom Schweich 7/26/2015. . .

Prunella vulgaris L.  Common Selfheal. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 315 m. southwest of Plainview Road. Tom Schweich 1294. 9 Sep 2015. ( Discarded, sterile. ) On the edge of a spring-fed swale close to an ephemeral stream. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1457. 27 Jun 2016. ( CAS EIU JCOS s.n. KHD OBI ) . .

Salvia reflexa Hornemann.  (Syn: S. lanceolata Rydb. [unpub.] , S. lanceolata Willd. [illeg.] , S. trichostemmoides Pursh ) Lanceleaf Sage. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Plants branching laterally after being eaten. Outside edge of a small outwash gravel bar, a few meters west of Plainview Road; 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.2 mi. north on Plainview Road; 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1566. 28 Sep 2016. ( Golden JCOS s.n. KHD ) .

Montiaceae

Claytonia rosea Rydb.  Rocky Mountain Springbeauty. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Widely scattered among grassy areas in recently burned Ponderosa pine woodland. Common across a wide area but never in dense clusters. Just north of Plainview Road, 2.1 miles by road north of the intersection of Plainview Road and Colorado State Highway 72, Coal Creek Canyon Road. Tom Schweich 1076. 23 Mar 2015. ( JCOS s.n. KHD56960 ) .

Onagraceae

Epilobium brachycarpum C. Presl.  Autumn Willow Herb. CalPhotos. Jepson eFlora. SEINet Taxon.

Coll. No. 1040, 15 Sep 2013, characters observed while keying: Late-season annual, from taproot, to 1 m, not glandular; Leaves, opposite at base, alternate above, stipules 0, petiole 4 mm + blade 46 mm × 6 mm wide, folded along mid-rib, toothed, glabrous; Flowers, parts in 4s; Sepals, 4.5 mm, deciduous after flowering; Hypantheum, 13 mm; Petals, 9.5 mm, notched; Ovary inferior; Stamens, in 2 unequal whorls of 4; Seeds, 1.3 mm, hair tufted, bug eaten.

- Ranson/Edwards Homestead Open Space Park, Relatively moist area, but not quite a wetland. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 860 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1286.1 28 Aug 2015. ( KHD ) . .

Epilobium ciliatum Raf.  Fringed Willowherb. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Relatively moist area, but not quite a wetland. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 860 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1286. 28 Aug 2015. ( JCOS s.n. KHD UCR267483 ) . .

Oenothera villosa Thunb.  Hairy Evening Primrose. CalPhotos. Jepson eFlora. SEINet Taxon.

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. Described from Coll. No. 1271, 29 July 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 104 m. northeast of Plainview Road. Tom Schweich 1271. 29 Jul 2015. ( JCOS s.n. KHD ) High plains above Rocky Flats, single plant growing in delatic gravels of small ephemeral stream entering pond. 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 700 m. downhill to northeast to a small reservoir; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1516. 24 Jul 2016. ( EIU JCOS s.n. KHD OBI ) .

Orobanchaceae

Castilleja integra A. Gray.  Wholeleaf Indian Paintbrush. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 30 cm.; Stem, tomentose throughout; Leaves, cauline, sessile, 90 mm. × 5 mm., narrowly lanceolate, entire; Bracts, 36 mm. × 11 mm., elliptic to oblanceolate, entire, green at base to red-orange; Calyx, tube 25 mm. + cleft below 10 mm. = 35 mm., cleft above 8 mm., light green to tips red-orange; Corolla, 36 mm. Described from Coll. No. 1143, 15 Jun 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 410 m. north of Plainview Road. Tom Schweich 1379. 29 May 2016. ( CS JCOS s.n. KHD ) . .

Castilleja sessiliflora Pursh.  Downy Paintedcup. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, On the upper bank, south side of a small creek, 75 meters east of Plainview Road, and 1.2 miles north on Plainview Road from Colorado State Highway 72. Tom Schweich, with Matt Schweich 1089. 25 Apr 2015. ( JCOS s.n. KHD56955 ) . .

Orobanche uniflora L.  Naked Broomrape. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, 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. Tom Schweich 1372. 29 May 2016. ( KHD ) .

Plantaginaceae

Penstemon secundiflorus Benth.  Sidebells Penstemon. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., caulescent, eastern slope; Leaves, opposite, well-spaced, sessile, 66 mm. × 23 mm. wide, lanceolate, entire, glaucus; Inflorescence, axis glabrous, not glandular-hairy, flowers mostly on one side of the stem; Calyx, 5 mm., with purple-tinged sinus tissue; Flowers, 18 mm., magenta; Stamens, inserted; Staminode, 1.8 mm. wide at tip, hairy; Anther, sacs, glabrous on side opposite dehiscence. (Described from Coll. No. 1120, 28 May 2015.)

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 150 m. east of Plainview Road. Tom Schweich 1120. 28 May 2015. ( JCOS s.n. KHD56971 ) . .

Penstemon virens Pennell ex Rydb.  Front Range Beardtongue. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial terrestrial herb, of eastern slope, ascending 16-30 cm. from horizontal rooting stem; Stem very short hairy proximally (supposedly in lines but not clearly so to me) becoming gland-tipped hairs distally; Leaves, “basal” and cauline, glabrous, “basal,” crowded around sprouts from horizontal stems, petiole, 20-30 mm., + blade, 30-35 mm. × 7-13 mm. wide, ovate to oblanceolate, entire, tip mucronate, cauline, opposite, petioled 8 mm. to sessile distally, 25-30 mm. × 7-8 mm. wide, margin entire to minutely toothed distally; Inflorescence, thryse, 8 to 12 flowers per node, leaves and bracts much reduced; Pedicels, 3 mm., with gland-tipped hairs; Calyx, tube 2 mm. + 5 lobes 2 mm. = 4 mm., tips acute; Flowers, zygomorphic, parts in 5s, not spurred; Corolla fused at base, purple to blue-violet, 13-15 mm., lobes 2 mm., limb 10 mm., outer surface glandular-pubescent; Stamens, 4, included, Staminode 1, not enlarged at tip, hairy in terminal 2 mm.; Anther, purple, sacs papillate. (Described from Coll. No. 1107, 14 May 2015, and Coll. No. 1121, 28 May 2015)

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 150 m. east of Plainview Road. Tom Schweich 1121. 28 May 2015. ( JCOS s.n. KHD56972 ) . .

Plantago lanceolata L.  Narrowleaf Plantain. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 55 cm., scapose; Leaves, basal, 22 cm. × 1.5 mm. wide, lance-elliptic, glabrous; Inflorescence, spike, 42 mm. × 6-7 mm. wide, slightly wider at base; Sepals, outer two connate, 3 mm., mid-rib strong green, villous-ciliate distally; Corolla, scarious, lobes, #4, 2 mm. Described from Coll. No. 1217, 16 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 95 m. east of Plainview Road. Tom Schweich 1217. 16 Jul 2015. ( JCOS s.n. KHD UC UCR267686 ) .

Polygonaceae

Eriogonum alatum Torr.  (Syn: Pterogonum alatum (Torr.) Gross ) Winged Buckwheat. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. Tom Schweich 7/29/2015. . .

Eriogonum umbellatum Torr. var. umbellatum.  Sulphur-Flower Buckwheat. CalPhotos. Jepson eFlora. SEINet Taxon.

Type collected “near the Rocky Mountains” by Edwin James, 1820. Described by Torrey in 1827.

- Ranson/Edwards Homestead Open Space Park, Among grasses and ponderosa pines, near top of south-facing slope. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, then 2.4 mi. northerly on Plainview Road, then 40 m. or so south of the road. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1409. 10 Jun 2016. ( JCOS s.n. KHD UC UCR ) .

Ranunculaceae

Anemone patens L. var. multifida Pritzel.  (Syn: Pulsatilla patens (L.) Mill. var. multifida (Pritz.) Zämels ) Eastern Pasqueflower. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Scattered among grassy areas in recently burned Ponderosa pine woodland. Flowers: Coll. No. 1075, 23 Mar 2015; Fruit: Coll. No. 1082, 25 Apr 2015; Leaves: Coll. No. 1125, 28 May 2015. Just north of Plainview Road, 2.1 miles by road north of the intersection of Plainview Road and Colorado State Highway 72, Coal Creek Canyon Road. Tom Schweich 1075. 23 Mar 2015. ( JCOS s.n. KHD56965 UCR266084 ) This collection is only leaves, combined with Coll. Nos. 1075 & 1082. High plains merging into Ponderosa pine woodland, 20 m. west of Plainview Road, 2.2 miles north of CO State Highway 72. Tom Schweich 1125. 28 May 2015. ( See Coll. No. 1075 ) Seed heads, combined with Coll. No. 1075. Grassy open spaces in burned ponderosa pine forest. Tom Schweich, with Matt Schweich 1082. 25 Apr 2015. ( See Coll. No. 1075 ) . .

Clematis hirsutissima Pursh.  (Syn: Coriflora hirsutissima (Pursh) W. A. Weber ) Hairy Clematis. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, USA, Colorado, Jefferson County, Ranson/Edwards Park. N of Rd. 72; E of Plainview. Verbatim Coordinates: T2S R70W S7, 8, 17 & 18. D. Hazlet 10831. 29 May 1999. ( CS79262 ) . .

Delphinium nuttallianum Pritz.  Twolobe Larkspur. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Upper northwest-facing slope above reservoir. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 620 m. north of Plainview Road. Tom Schweich 1381. 29 May 2016. ( CAS JCOS s.n. KHD ) .

Rosaceae

Crataegus succulenta Schrad. ex Link.  (Syn: Crataegus chrysocarpa Ashe , Crataegus erythropoda Ashe , Crataegus macrantha Britton var. occidentalis (Britton) Eggl. ) Fleshy Hawthorn. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Woody shrub to 1 m., thornless, alternate leaves, creeksize. Tom Schweich 8/20/2015. Discarded, sterile. See Coll. No. 1462 for material with fruit. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the south side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1455. 27 Jun 2016. ( Sterile, discarded. ) Scattered along ephemeral steam. Tom Schweich 1462. 27 Jun 2016. ( JCOS s.n. KHD ) . .

Potentilla hippiana Lehm. var. effusa (Douglas ex Lehm.) Dorn.  (Syn: P. effusa Douglas ex Lehm. ) Wooly Cinquefoil. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., long straight hairy to wooly throughout, eglandular; Leaves, basal and cauline, basal, compound, stipules, 18 mm., entire, petiole, 50 mm., blade, 50 mm. × 33 mm. wide, obovate, leaflets, #9, 23 mm. × 9 mm. wide, bases decurrent, margin, flat, toothed most of length; Inflorescence, cymose; Bractlets, 3 mm., slightly darker than calyx lobes; Calyx, lobes #5, 5 mm.; Petals, #5, 5 mm. × 4 mm. wide, yellow; Ovary, glabrous; Style, 2 mm., widest at base; Fruit, achene, #10, 1.5 mm. × 1 mm. wide, brown, smooth, glabrous. Described from Coll. No. 1261, 29 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Same as Coll. No. 1261, which was made 29 Jul 2015. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 85 m. east of Plainview Road. Tom Schweich 1218. 16 Jul 2015. ( JCOS s.n. KHD ) Same as Coll. No. 1218, which was made 16 Jul 2015. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 85 m. east of Plainview Road. Tom Schweich 1261. 29 Jul 2015. ( CAS OBI UC UCR267472 ) . .

Prunus americana Marshall.  American Plum. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial shrub, to 2 m.; Branches, spines or thorns 0, glabrous when young; Leaves, simple, 19 mm. × 8 mm. wide, lanceolate, pinnately veined, glabrous, margin toothed, teeth eglandular, petiole 3 mm., adaxially hairy; Sepals, 2.5 mm., reflexed; Flowers, in 2s and 3s in axils, Pedicels, sparsely hairy; Petals, white, 5-7 mm. × 4.5 mm. wide; Ovary superior; Styles 1; Fruit unknown Described from Coll. No. 1093, 30 Apr 2015).

- Ranson/Edwards Homestead Open Space Park, Blooms first, then leafs out, white flowers. lower terrace of Coal Creek. Tom Schweich 1598. 2 May 2017. ( Golden ) . .

Rosa arkansana Porter.  Prairie Rose. CalPhotos. Jepson eFlora. SEINet Taxon.

Low-growing perennial, to 20 cm.; Stem, straight slender unequal prickles, present on new growth; Leaves, alternate, compound, leaflets (7-8) 9, 20 mm. × 9 mm. wide, serrate, teeth dark-tipped, unclear whether there is glandular exudate, sparsely villous on both sides; Flowers, in clusters of 2-5; Sepals, 16 mm. × 3 mm. wide, abaxial, stalked glandular, adaxial, glandular hairy; Petals, 28 mm. × 21 mm. wide, color pink (Described from Coll. No. 1456, 27 June 2016).

- Ranson/Edwards Homestead Open Space Park, Petal attachment tenuous making good flower collections difficult. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the south side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1456. 27 Jun 2016. ( EIU JCOS s.n. KHD ) .

Rubiaceae

Galium aparine L.  (Syn: Galium aparine L. var. echinospermum (Wallr.) Farw. , Galium spurium L. ) Sticky Willy, Cleavers. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual/perennial unknown, weak-stemmed and scrambling through shrubs and grass; Stem, retrorsely scabrous on angles (but not densely so); Leaves, whorls of 6-8 (more leaves above, fewer below), 46 mm. × 4 mm. wide, oblanceolate, margins retrorsely scabrous, tips with a short spine; Flowers, corolla, greenish-white, lobes 1 mm.; Fruit, 1.3 mm., covered with hooked hairs (Described from Coll. No. 1395, 8 June 2016).

- Ranson/Edwards Homestead Open Space Park, North-facing grassy slope with ponderosa pines. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, then 2.4 mi. northerly on Plainview Road, then 100 m. south of the road to the other side of the drainage. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1410. 10 Jun 2016. ( CAS JCOS s.n. KHD OBI ) .

Santalaceae

Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl.  (Syn: Comandra umbellata (L.) Nutt. var. pallida (A. DC.) M. E. Jones ) Pale Bastard Toadflax. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, 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. Tom Schweich 1373. 29 May 2016. ( CS JCOS s.n. KHD OBI ) .

Violaceae

Viola nuttallii Pursh.  Nuttall's Violet. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Stevens parcel immediately south of Ranson/Edwards parcel, 115 m north of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1313. 14 Apr 2016. ( CS JCOS s.n. KHD OBI ) .

Alliaceae

Allium cernuum Roth.  Nodding Onion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, North-facing bank of small watercourse. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 204 m. west of Plainview Road. Tom Schweich 1253. 26 Jul 2015. ( JCOS s.n. KHD UCR267466 ) . .

Allium geyeri S. Watson.  Geyer's Onion. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, geophyte, to 40 cm.; Bulb, 20 mm. × 20 mm. wide, ovoid, outer coat with coarse fibers; Leaves, #2-3, 24 cm. × 1.5 mm. wide, somewhat withered at anthesis; Inflorescence, umbel; Bracts, #3, 14 mm., prominently 1-veined; Flowers, #29, tepals, 7 mm., pink; Seed, unknown (Described from Coll. No. 1417, 10 June 2016).

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses, Arnica fulgens, and a few small ponderosa pines. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.7 mi. north on Plainview Road, then 375 m. southwest upslope.15.7 km. north northeast of the GNIS location of Golden. Tom Schweich 1417. 10 Jun 2016. ( CS Golden JCOS s.n. KHD UCR ) . .

Allium textile A. Nelson & J.F. Macbr.  Textile Onion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Plainview, USA, Colorado, Jefferson County, Plainview E. Bethel Jun 1906. ( CS5193 ) .

- Ranson/Edwards Homestead Open Space Park, Pinus ponderosa, Rosa woodii, Heterotheca villosa, Ribes cereum, Rubus deliciosus, Nothocalais cuspidata, Ratibida columnifera, Commandra umbellata, Frasera speciosa, Liatris punctata, Penstemon secundiflorus, Antennaria parvifolia, Artemesia frigida, A. United States, Colorado, Jefferson, Denise Wilson 27 May 2013. ( CHIC18153 ) .

Cyperaceae

Carex .  Sedge. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 1213. 16 Jul 2015. ( Golden ) Growing in a small spring in open prairie, 100 meters east of Plainview Road, and 1.1 miles north on Plainview Road from Colorado State Highway 72. Tom Schweich, with Matt Schweich 1088. 25 Apr 2015. ( Golden ) . [ Immature, unable to identify, possibly the same taxa as #1213 or #1215 that were made 16 Jul 2015, some 4 m away. ] .

Carex inops L.H. Bailey ssp. heliophila (Mack.) Crins.  (Syn: C. pensylvanica Lam. ssp. heliophila (Mack.) W. A. Weber ) Sun Sedge. CalPhotos. Jepson eFlora. SEINet Taxon.

Coll. No. 1079, 23 April 2015, characters observed: Perennial herb, to 16 cm., prior year leaves to 23 cm.; Rhizome, unknown (none found); Culm, 11.5 cm. × 0.6 mm., ±triangular, but obscured by white striations at least when dry; Leaves, 12 cm. × 1.5 mm., ±flat, some folded ≤30°.; Inflorescence, multiple spikes, all approximate (I think this means all pretty close together), 1-2 pistillate spike(s) below, 1 staminate spike above; Bracts, lowest, blade 8 mm., sheath 4.5 mm., papery; Pistillate spike, peduncled 1.0-1.3 mm., 9 mm., brown (not black); Staminate spike, terminal, 16 mm., ovoid (not cylindric), brown (not black); Scales, >perigynum body; Perigynum, pubescent on faces, margin ciliate; Achenes, unknown. Described from Coll. No. 1079, 23 April 2015.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 5/1/2015. . .

Carex nebrascensis Dewey.  Nebraska Sedge. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, herbaceous, to 50 cm., glabrous throughout, sometimes growing in running water; Inflorescence, 3-5 spikelets, 18-31 mm., cylindrical, lowest pistillate, peduncle 6 mm., stout, erect, intermediate pistillate below and staminate above, upper staminate; Bracts, lowest without sheath (Sect. Phacocystis per Taylor, 2010); pistillate and staminate flowers on same stem (Ackerfield, 2015, Key 4), terminal spikelet staminate (Group 8 per TJM2); Spikelets, 2 or more on each culm, lateral spikelets pedunculate, 30 mm. × 5 mm. wide, length 6× width; Scales, pistillate, 3.5 mm. × 1.4 mm. wide, generally black except prominent midrib and chartaceous margin; Perigynum, body 1.8-3.0 mm. + beak 0.3-0.4 mm. = 2.1-3.4 mm. × 1.2 mm. wide,, walls tough, some faces 3-5 veined, beak bifid but not as clearly notched as illustrated in TJM2, teeth minutely hairy; Stigmas 2 (Described from Coll. No. 508, 2 Aug 2007, Mono County, CA, and Coll. No. 1123, 28 May 2015, Jefferson County, CO.)

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.3 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 60 m. east of Plainview Road, 35 m. north of creek. Tom Schweich 1123. 28 May 2015. ( JCOS s.n. KHD56952 UC UCR266085 ) . .

Eleocharis sp.  Spikerush. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Growing in water. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 90 m. east of Plainview Road. Tom Schweich 1215. 16 Jul 2015. ( JCOS s.n. KHD UCR267452 ) .

Iridaceae

Iris missouriensis Nutt.  Western Blue Flag. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Moist east-facing slope with deep grass. 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. Tom Schweich 1370. 29 May 2016. ( CAS JCOS s.n. KHD OBI UC UCR ) .

Juncaceae

Juncus arcticus (Willd.)Trautv. var. balticus (Willdenow) Trautvetter.  (Syn: Juncus arcticus (Willd.)Trautv. ssp. ater (Rydb.) Hultén , Juncus ater Rydb. , Juncus balticus Willd. , Juncus balticus Willd. ssp. ater (Rydb.) Snogerup , J. balticus Willd. var. montanus Engelm. ) Arctic Rush. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 1 m.; Leaves, basal sheaths only; Inflorescence, appears lateral; Bract, appearing to be extension of stem, 14-18 cm., >stem; Flowers, many per stem, (obs. 20); Stamens, 5. Described from Coll. No. 1269, 29 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 330 m. east of Plainview Road. Tom Schweich 1269. 29 Jul 2015. ( KHD ) .

Liliaceae

Calochortus gunnisonii S. Watson.  Gunnison's Mariposa Lily. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. In fruit, scattered thoughout this field. Tom Schweich 7/29/2015. .

Poaceae

Agrostis stolonifera L.  Creeping Bentgrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, 85-100 cm., decumbent at base or not, weakly rhizomatous, 1 of 6 collections has a 2.5 cm. scaly rhizome; Stem, nodes green; Leaves, sheath, open, glabrous at summit, ligule, membraneous, 4 mm., angled, chartaceous tissue extending down sheath 20 mm., auricles, 0-1 mm. (double fold of proximal blade margin), blade, 80-85 mm. × 3.2-3.8 mm. wide, scabrous adaxially; Inflorescence, open panicle, 18 cm. × 14 cm. wide, deltate, branches not bearing spikelets to base; Spikelets, 1 per node, on 1°-3° panicle branches, axis not extended beside or above floret; Glumes, #2, 2.2-2.3 mm., ±equal, keeled, scabrous on keel, veins 1, awns 0, purplish; Disarticulation above the glumes; Florets, 1 per spikelet, bisexual; Lemma, 1.8 mm., thin, transparent, except 3(5?) green veins, awns, 0-0.3 mm.; Palea, 1.3-1.5 mm.; Anthers, #3, 1.4 mm., tan with purple abaxially. Introduced. (Described from Coll. No. 1225, 16 Jul 2015, and Coll. No. 1515, 24 July 2016.)

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 70 m. west of Plainview Road. Tom Schweich 1225. 16 Jul 2015. ( JCOS s.n. KHD UC ) Introduced. 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 300 m. northeast, almost to the boundary fence; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1515. 24 Jul 2016. ( Golden ) . .

Andropogon gerardii Vitman.  Big Bluestem. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 85 cm., clumped, rhizomes unknown; Leaves, blade and sheath differentiated; Sheath, 11 cm., open; Ligule, membraneous (though surrounded by hairs), 3 mm., auricles 0; Blade, soft, flat, 27 cm., hairy near ligule; Inflorescence, 80 mm., > leaves, 1-2 per stem, in 5-6 digitate branches, spikelets many; Rachis, soft bristles on margins and at nodes; Disarticulation at nodes of rachis; Spikelets in pairs, Sterile spikelet, 7 mm., pedicel 4.5 mm.; Fertile spikelet, Florets #1, Glumes, awns 0, ±equal, lower keeled, upper flattened and grooved; Lemma, 6 mm., membraneous, rolled, glabrous, tip 2-forked, awn, #1, 13 mm., bent, twisted, attached on back; Stamens, 3; Anthers, yellow; Ovary, glabrous; Stigma, feathery. (Described from Coll. No. 1060, 28 Aug 2014).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 150 m. northeast of Plainview Road. Tom Schweich 1265. 29 Jul 2015. ( JCOS s.n. KHD OBI ) . .

Briza sp.  Quaking Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. . .

Bromus inermis Leyss.  (Syn: B. inermis Leyss. ssp. inermis ) Smooth Brome. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass to 1 m., rhizomatous; Leaves, sheath, 8-11 cm., closed, ligule, <1 mm., membraneous, blade, 12-17 cm × 0.5 cm., flat, soft, with a distinguishing fold, usually described as an “M” or a “W” that is difficult to see when dry; Inflorescence, panicle, 15 cm. × 4 cm. wide, multiple 1° branches per node, mostly on one side of rachis; Spikelets, 1 per node on 1° and 2° panicle branches, 15-24 mm. × 5 mm. wide, laterally compressed, 2-6 florets per spikelet; Glumes, 2, keeled, glabrous, lower, 7-8 mm., veins 1 upper, 8-10 mm., <lowest floret; Rachilla, sparsely hairy on abaxial side, extended beyond uppermost floret or not; Callus, small, glabrous; Lemma, 11-12 mm., veins, 3, 5, 7, obvious, tip bifid, some awned; Awn (when present), 1.0-1.6 mm., arising near tip of lemma; Palea, 9 mm., veins ciliate. (Described from Coll. No. 1113, 26 May 2014, and Coll. No. 1219, 16 Jul 2015).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 40 m. west of Plainview Road. Tom Schweich 1219. 16 Jul 2015. ( CAS JCOS s.n. KHD UC ) . .

Bromus japonicus Thunb.  Japanese Cheat Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Coll. No. 1207, 13 Jul 2015, characters observed: Annual grass, to 40 cm.; Leaves, sheath, 60 mm. closed + 12 mm. open, pilose (but not densely so), ligule, membraneous, + some hairs, blade, hairy; Inflorescence, panicle, >leaves; Pedicel, 20 mm.; Spikelets, 1-3 per panicle branch, 22 mm. × 6 mm. wide, elliptical, drooping; Glumes, #2, <lowest floret, lower, 4.5 mm., veins 3, upper, 5.5 mm., veins 5; Rachilla, short hairy; Callus, glabrous; Florets, #12, 2-ranked, closely held hiding rachilla; Disarticulation between florets; Lemma, 8 mm. × 4 mm. wide, margin, hyaline, 0.5 mm., tip bifid, awn, #1, 5-12 mm. long, mid-spikelet awns longest, flattened at base, not twisted, attached near bifid tip. Described from Coll. No. 1207, 13 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs on a dry alluvial terrace. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.3 mi. north on Plainview Road, then 170 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1461. 27 Jun 2016. ( CAS Golden JCOS s.n. KHD ) . .

Dactylis glomerata L.  Orchard Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, to 1.0-1.2 m., not rhizomatous, basal or subterranean internodes not swollen; Stem herbaceous; Leaf, Sheath open and closed observed, published descriptions are roughly equally divided as to whether the sheath is open or closed, Ligule membraneous, 5 mm.; Blade, differentiated from sheath, base not constricted, soft, 25 cm. × 0.7 cm. wide, not sharp-pointed; Auricle, rounded, <1 mm., generally described as 0; Infloresence exceeding leaves, 13 cm., panicle, well developed, erect, 1° branches open, branching 4° or 5°; Spikelets not enclosed in a bur-like involucre, not subtended by bristles or long silky hairs, similar throughout plant, all on one side of rachis, crowded in dense clusters, on 2°-4° panicle branches 1 per node, axis few hairy, some spikelets appear to be infertile; Glumes, 2 < lowest floret, lower, 3.5 mm, smaller and thinner than upper, 6 mm., keeled, glabrous to ciliate on keel, else sparsely hairy; Florets not modified into bulblets 4+ per spikelet , have feathery stigma-like material but no ovary (immature?), uppermost vestigal floret not club-shaped rudiment (as seen in Melica); Lemma lowest largest, 5 mm., reduced above, keeled, line of hairs on keel, 5 veins, tip forked, awn 1.0-1.5 mm.; Palea light green with 2 veins forked at tip. Described from Collection No. 815, 9 May 2012, Alameda County, CA and Coll. No. 1111, 26 May 2015, Jefferson County, CO.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/29/2015. Tom Schweich 7/26/2015. In and around a small group of ponderosa pines. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.8 mi. north on Plainview Road, then 350 m. southwest upslope.15.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1418. 10 Jun 2016. ( JCOS s.n. KHD UC ) . .

Echinochloa muricata (P. Beauv.) Fernald var. microstachya Wiegand.  Rough Barnyardgrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual grass, to 80 cm.; Roots, fibrous; Leaves, blade and sheath differentiated; Blades, soft; Sheath, open; Ligule, absent Blade, flat, glabrous, margins scabrous; Inflorescence, 1 per stem, to 8 cm., 5-8 branches, branches 15-45 mm.; Rachis, winged; Spikelets, similar, borne singly, 3 mm. × 1.6 mm. wide, margins, short hairy; Glumes, lower absent, upper, 1.0-1.5 mm., margin barely ciliate; Lemma, 3 mm., >. glumes, ovate, margin hairy, tip, acute, not withering, not differentiated from the body, awn 0-1.8 mm., sterile lemma hairs slightly pustulate; Fruit, greenish-yellow (Described from Coll. No. 1061, 28 Aug 2014).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road. Tom Schweich 1296. 9 Sep 2015. ( CAS JCOS s.n. KHD56536 UC UCR267489 ) . .

Hordeum brachyantherum Nevski.  Meadow Barley. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, to 60 cm.; Leaves, sheath, 8 cm., glabrous, ligule, membraneous, 0.5 mm., auricles, unremarkable, blade, 11 cm., flat; Inflorescence, single spikes per culm, 9 cm., × 3 cm. wide, 2-ranked, fully exserted at maturity; Spikelets, 3 per node; Disarticulation, at nodes of rachis; Lateral spikelets, pedicelled, reduced, sterile, glumes, 18-20 mm., awn-like, scabrous at base; Central spikelet, glumes, 21 mm., similar in shape to lateral glumes, lemmas, 5 mm., awn, #1, 21 mm. Described from Coll. No. 1214, 16 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 90 m. east of Plainview Road. Tom Schweich 1214. 16 Jul 2015. ( JCOS s.n. KHD UC UCR267684 ) . .

Koeleria macrantha (Ledeb.) Schult.  Prairie Junegrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial bunch grass, to 45-55 cm., non-rhizomatous; Leaves, mostly basal or lowest cauline, cauline, sheath, 90 mm., open, ligule, <1-1.5 mm., membraneous, auricles, 0, blade, 40 mm., tip prow-shaped or merely constricted; Inflorescence, panicle, 60 mm. × 9 mm., shiny in anthesis due to exposure of translucent palae, short branches, branches short soft hairy; Spikelets, 5 mm., 1 per node on 1°-3° or indistinct panicle branches; Glumes, lower, 3 mm., veins 1, upper, 4 mm., veins 3; Florets, 3, #1 and #2 pistillate, #3 staminate, or variously mixed bisexual and pistillate, open, i.e., palea separated from lemma; Disarticulation, between florets; Rachilla hairy, extends nearly 1 mm. above upper floret (or not); extension undecorated; Lemma, 4.5 mm., veins 5, short hairy throughout, awn, 0-0.5 mm., short, soft; Palea, =lemma, translucent or colorless, exposed, i.e., outside lemma.; Stamens, 3, 1.8 mm. Described from Coll. No. 1131, 9 June 2015, and Coll. No. 1144, 15 Jun 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 85 m. east of Plainview Road. Tom Schweich 1117. 28 May 2015. ( JCOS s.n. KHD UC UCR266087 ) In and around a small group of ponderosa pines. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.8 mi. north on Plainview Road, then 350 m. southwest upslope.15.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1419. 10 Jun 2016. ( CS EIU Golden ) . .

Muhlenbergia montana (Nutt.) Hitchc.  Mountain Muhly. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, to 50 cm., caespitose; Leaves, sheath, open, ligule, membraneous, 4.5 mm., auricles, 0, blade, 110 mm. × 1 mm. wide; Inflorescence, rather sparse contracted panicle, 120 mm.; Florets per spikelet, #1; Glumes, #2, papery, toothed, lower, 1.5 mm., upper, 2 mm., teeth 3; Lemma, 3 mm. + awn 13 mm., flexuous, tuft of hairs at base; Palea, 2.8 mm. Described from Coll. No. 1282, 28 Aug 2015.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 700 m. west of Plainview Road. Tom Schweich 1282. 28 Aug 2015. ( CAS JCOS s.n. KHD UC UCR267480 ) . .

Muhlenbergia wrightii Vasey ex J.M. Coult.  Spike muhly. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, to 60 cm., caespitose; Culms, erect, not rooting at nodes, short hairy; Leaves, sheath, open, 12 cm., ligule, membraneous, 1 mm., auricles 0, blade, 12 cm. × 1.5 mm., folded; Inflorescence, narrow (4 mm.) spike-like panicle; Spikelets, neither enclosed in burs nor in pairs; Florets, 1 per spikelet, reduced florets absent; Glumes, ±equal, 1.5 mm. + awn 0.5 mm.; Disarticulation, above the glumes; Lemma, 2 mm. × 0.5 mm. wide + awn 0.5 mm. (usually described as “mucronate” rather than awned); Palea, ?. Described from Coll. No. 1276, 30 Jul 2015.

- Ranson/Edwards Homestead Open Space Park, 16.5 km. north northwest of the GNIS location of Golden. Northwest corner of the Ranson/Edwards parcel, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 2.2 mi. north on Plainview Road, then 350 m. west northwest, nearly to the parcel boundary at the base of a hogback. Tom Schweich 1563. 8 Sep 2016. ( Golden JCOS s.n. KHD ) . .

Phleum pratense L.  Timothy. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 90 m. east of Plainview Road. Tom Schweich 1216. 16 Jul 2015. ( JCOS s.n. KHD OBI UCR267685 ) High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 300 m. east northeast of Plainview Road. Tom Schweich 1268. 29 Jul 2015. ( JCOS s.n. KHD UC ) High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 315 m. southwest of Plainview Road. Tom Schweich 1295. 9 Sep 2015. ( CAS JCOS s.n. KHD ) . .

Poa pratensis L.  (Syn: P. agassizensis B. Boivin & D. Löve ) Kentucky Bluegrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, rhizomatous (although of material collected for three vouchers, only one has rhizomes), not strongly flattened, to 75 cm.; Sheath, open about ½; Ligule, membraneous, 0.7 mm.; Auricles, 0; Inflorescence, much-branched open panicle, branches scabrous; Spikelets, one per node, 4 mm., awns 0; Florets, 3 per spikelet, reduced florets above fertile floret, #1 ♀, #2-3 ♂, Rachilla, extends 1 mm. above upper floret, not hairy; Glumes, #2, keeled, scabrous, lower, 2.0-2.3 mm., veins 1, upper, 2.5-3.0 mm., veins 3, prominent; Lemma, 3 mm., veins 5, keeled, tuft of hairs at base, >⅓ lemma; Palea, 2.3 mm., veins 2, green, otherwise translucent. (Described from Coll. No. 1420, 10 June 2016). Subspecies of P. pratensis are not recognized in Colorado (Weber&Wittmann 2012, Ackerman 2015).

- Ranson/Edwards Homestead Open Space Park, Sloping bank of creek, perennial grass, rhizomatous. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 100 m. east of Plainview Road. Tom Schweich 1118. 28 May 2015. ( JCOS s.n. KHD56951 UCR266086 ) In and around a small group of ponderosa pines. Collected with Dactylis glomerata and Koeleria macrantha. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.8 mi. north on Plainview Road, then 350 m. southwest upslope.15.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1420. 10 Jun 2016. ( JCOS s.n. KHD UC ) . .

Schizachyrium scoparium (Michx.) Nash.  Little Bluestem. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 125 m. northeast of Plainview Road. Tom Schweich 1262. 29 Jul 2015. ( JCOS s.n. KHD OBI UC UCR267474 ) . .

Sorghastrum nutans (L.) Nash.  Yellow Indian Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial warm season grass, to 1.2 m.; Inflorescence, panicle, 12 cm., color distinct yellowish; Spikelets, paired (theoretically), sessile spikelet present, pedicellate spikelet absent leaving a hairy pedicel; Compression, ±dorsal (upper glume flattened); Glumes, 6 mm., ±equal, veins 7 prominent green, upper glabrous, lower hairy; Florets, 2 per spikelet, lower floret reduced and sterile, upper floret perfect; Lemma, 4.5 mm., membraneous, apex bifid and awned, awn, 12 mm., twisted, bent once; Palea, reduced or missing; Stamens, 3, 4 mm., yellow; Stigmas, 2, feathery, pink (turning brown?). (Described from Coll. No. 1249, 26 Jul 2015).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 100 m. west of Plainview Road. Tom Schweich 1249. 26 Jul 2015. ( JCOS s.n. KHD UCR267463 ) 16.5 km. north northwest of the GNIS location of Golden. Northwest corner of the Ranson/Edwards parcel, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 2.2 mi. north on Plainview Road, then 360 m. west northwest, nearly to the parcel boundary at the base of a hogback. Tom Schweich 1562. 8 Sep 2016. ( Golden KHD OBI ) . .

Spartina pectinata Bosc ex Link.  Prairie Cordgrass. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Relatively moist area, but not quite a wetland. High plains above Rocky Flats, 15.4 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 840 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1288. 28 Aug 2015. ( CAS JCOS s.n. KHD OBI83224 UC UCR267485 ) . .

Sporobolus heterolepis (A. Gray) A. Gray.  Prairie Drop-seed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Determination tentative. Tom Schweich 7/24/2016. On a small terrace on the north side of intermittent creek. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road, from CO Highway 93, 1.2 mi. north on Plainview Road, then 45 m. west of Plainview road, 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1555. 3 Sep 2016. ( Golden ) . .

Thinopyrum intermedium (Host) Barkworth & D.R. Dewey.  (Syn: Elymus hispidus (Opiz) Melderis ) Intermediate Wheatgrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial grass, to >1 m., rhizomatous; Leaves, sheath, open, 19 cm., outer margin ciliate proximally, ligules, membraneous, 1 mm., auricles, 0, blade, 24 cm., involute; Inflorescence, 2-sided spike; Spikelets, 1 per node, sessile, ascending; Glumes, ±equal, 7.5-8.0 mm., stiff, veins 5, tip offset mucronate, awn 0, sparsely hairy on veins and margins; Florets per spikelet, 6; Lemma, 9 mm., stiff, veins 5, tip rudimentary awn; Palea, 8.5 mm., robust, fused to grain. Described from Coll. No. 1272, 20 July 2015.

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/20/2015. .

Number of taxa: 132

Notes:

† -- Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
‡ -- Southwest Environmental Information Network, SEINet. 2009-2014. http//:swbiodiversity.org/seinet/index.php. Accessed from July 2009 to September 2014.

Locations Included in This Area

Bibliography

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Date and time this article was prepared: 5/18/2017 12:56:48 PM.