Eastern Mojave Vegetation

Detailed Area Plant List for Trout Creek Pass, Chaffee 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 Trout Creek Pass, Chaffee County, United States.

Asteraceae

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).

- Salt Creek, Tom Schweich 2695. 16 Aug 2021. ( Golden ) . .

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

- Salt Creek, Tom Schweich 2694. 16 Aug 2021. ( Golden ) . .

Chaenactis (Hook.) Hook. & Arn.  Douglas' Dustymaiden. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2562. 12 Jul 2021. ( Golden ) . .

Erigeron Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2569. 12 Jul 2021. ( Golden ) Tom Schweich 2571. 12 Jul 2021. ( Golden ) Tom Schweich 2689. 16 Aug 2021. ( Golden ) . .

Gutierrezia sarothrae (Pursh) Britton & Rusby.  (Syn: G. linearifolia Lag. ) 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.)

- Salt Creek, Tom Schweich 2687. 16 Aug 2021. ( Golden ) . .

Hymenoxys richardsonii (Hook.) Cockerell var. floribunda (A. Gray) Parker.  (Syn: Picradenia richardsonii Hooker var. floribunda (A. Gray) Weber ) Colorado Rubberweed. CalPhotos. Jepson eFlora. SEINet Taxon.

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

- Trout Creek Pass, Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2189. 5 Aug 2019. ( CAS KHD OBI REGIS UCR ) .

- Salt Creek, Tom Schweich 2564. 12 Jul 2021. ( Golden ) . .

Solidago L.  Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2692. 16 Aug 2021. ( Golden ) . .

Tetradymia canescens DC.  Spineless Horsebush. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial shrub, to 1 m., woody below, unarmed; Stems some sharp-pointed, 2nd+ year stems pubesence interrupted by linear glabrescent streaks (Sect. Tetradymia, incl. stenolepis, canescens, and glabrata); Leaves distal only, lanceolate, 15 mm. × 2 mm. wide, entire, gray tomentose (not green glabrous), not forming spines; Heads, with only disc flowers (discoid); Involucre cylindric; Phyllaries 4, in one equal series or 2-ranked (which doesn't really matter when keying), 9 mm., wooly, carinate (keeled), not scarious or transparent, tips not black; Receptacle epaleate; Disc flowers, 4; Corolla, 5-lobed, yellow; Pappus of many well-developed bristles. Achenes glabrous (Described from Coll. No. 706, 15 Nov 2011, and Coll. No. 1029, 24 Jul 2013).

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda. A Western Cordilleran plant, also collected at Mono Lake, California. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2190. 5 Aug 2019. ( CAS KHD OBI REGIS UCR ) .

Boraginaceae

Cryptantha thyrsiflora (Greene) Payson.  Limestone Cat's-Eye. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2563. 12 Jul 2021. ( Golden ) . .

Lithospermum multiflorum Torrey ex A. Gray.  Many Flowered Stoneseed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial cleistogamous flowers absent. Flowers heterostyled and dimorphic.

- Salt Creek, Possibly mis-labeled #2468. Tom Schweich 2568. 12 Jul 2021. ( Golden ) . .

Mertensia ciliata (Torr.) G. Don.  Tall Fringed Bluebells. CalPhotos. Jepson eFlora. SEINet Taxon.

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda, Tetradymia canescens, Geranium caespitosum, Penstemon barbatus, Galium boreale, and Achnatherum hymenoides. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2194.1 5 Aug 2019. ( KHD ) .

Fabaceae

Astragalus Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2570. 12 Jul 2021. ( Golden ) Tom Schweich 2574. 12 Jul 2021. ( Golden ) Tom Schweich 2577. 12 Jul 2021. ( Golden ) Tom Schweich 2696. 16 Aug 2021. ( Golden ) . .

Oxytropis sericea Torr. & A. Gray.  White Locoweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2576. 12 Jul 2021. ( Golden ) .

Geraniaceae

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

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda, Tetradymia canescens, and Achnatherum hymenoides. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2192. 5 Aug 2019. ( CAS KHD OBI UCR ) .

Onagraceae

Oenothera coronopifolia Torr. & A. Gray.  Crownleaf Evening Primrose. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2566. 12 Jul 2021. ( Golden ) Tom Schweich 2572. 12 Jul 2021. ( Golden ) .

Plantaginaceae

Penstemon Schmidel.  Beard Tongue. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2575. 7 Jul 2021. ( Golden ) . .

Penstemon barbatus (Cav.) Roth.  Beard-Lip Beardtongue. CalPhotos. Jepson eFlora. SEINet Taxon.

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda, Tetradymia canescens, Geranium caespitosum, and Achnatherum hymenoides. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2193. 5 Aug 2019. ( CAS KHD OBI UCR ) .

- Salt Creek, Tom Schweich 2567. 12 Jul 2021. ( Golden ) .

Polemoniaceae

Ipomopsis aggregata (Pursh) V.E. Grant ssp. candida (Rydb.) V.E. Grant & A.D. Grant.  Scarlet Gilia. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2565. 12 Jul 2021. ( 7/12/2021 ) .

Rubiaceae

Galium boreale S. Watson.  (Syn: Galium septentrionale Roem. & Schult. ) Bedstraw. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 40 cm.; Stems, ascending; Leaves, in whorls of 4, tips rounded, 3-nerved; Flowers, cream-colored; Fruit, short-hairy (Described from Coll. No. 2374, 23 June 2020).

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda, Tetradymia canescens, Geranium caespitosum, Penstemon barbatus, and Achnatherum hymenoides. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2194. 5 Aug 2019. ( KHD OBI ) .

Poaceae

Grass Family. CalPhotos. Jepson eFlora. SEINet Taxon.

- Salt Creek, Tom Schweich 2578. 12 Jul 2021. ( 7/12/2021 ) Tom Schweich 2693. 16 Aug 2021. ( Golden ) Tom Schweich 2693.1 16 Aug 2021. ( Golden ) . .

Achnatherum hymenoides (Roem. & Schult.) Barkworth.  (=Eriocoma hymenoides (Roem. & Schult.) Rydb.) Indian Rice Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

- Trout Creek Pass, Collected with Hymenoxys richardsonii var. floribunda and Tetradymia canescens. Along Chaffee County Road 311, about 0.8 mi. west of its intersection with US Highway 285 at Trout Creek Pass, 149 km. southwest of the GNIS location of Golden. Tom Schweich 2191. 5 Aug 2019. ( CAS KHD OBI REGIS UCR ) . .

Hesperostipa comata (Trin. & Rupr.) Barkworth.  (Syn: Stipa comata Trin. & Rupr. ) Needle and Thread. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, 50 cm., clumped, nonrhizomatous; Roots, fibrous; Stem, herbaceous; Leaves, blade and sheath differentiated; Sheath, 100-120 mm., open ≥½, glabrous; Ligule, membranous, length 3.7 mm., lacerate into 2 equal parts, auricles 0; Blade, 60 mm., involute, glabrous; Inflorescence, 1 per culm, >leaves, panicle, 200 mm. × 30 mm. wide; Rachis, not extended, somewhat scabrous throughout; Spikelets, many, similar, borne singly; Compression, unremarkable; Disarticulation, above the glumes; Glumes, lower, 23-34 mm., veins #3, upper, 23-29 mm., veins #5, awl-shaped, rounded, membranous, ±equal, tip, very narrow, not awned; Florets, 1 per spikelet; Callus, 4.5-50 mm., sharp, straight hairs 1.0-1.5 mm., color tan; Lemma, 9.5-10.0 mm., rolled, indurate, straight hairy 0.5 mm., color white-tan, veins #3(?), awns, #1, 125-160 mm., twisted and short straight hairy proximal 45 mm., bent, scabrous distally; Palea, 9 mm., ±lemma, few white hairs on mid-vein; Stamens, #3; Anthers, 6.5 mm. (Described from Coll. No. 1890, 28 May 2018).

- Salt Creek, valley bottom, around a small grove of aspens Tom Schweich 2573. 12 Jul 2021. ( 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.

- Salt Creek, Tom Schweich 2690. 16 Aug 2021. ( Golden ) .

Total number of taxa: 23
Native Taxa:
(serif, italic, bold)
17
Exotic Taxa:
(sans-serif, italic)
0
Nativity Undetermined:
(default font, italic)
6
Listed Weeds:
Indentified as Weed
0

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: 9/6/2021 5:39:54 PM.