OregonFlora: Astragalus pauperculus vs. Astragalus salmonis

	Astragalus pauperculus	Astragalus salmonis
		Trout Creek milkvetch
Habit		Plants perennial, shortly caulescent or subacaulescent, strigillose, hairs basifixed.
Stems		several–numerous, ascending-erect, 1–5 cm.
Leaves		mostly clustered at bases, 2.5–10 cm; leaflets 9–15(19), narrowly oblong-elliptic, linear-oblong or oblong-obovate; (1)2–10 × 1–3 mm; tips obtuse to subacute; surfaces abaxially pubescent, adaxially glabrous to glabrate; stipules 2–5 mm; free.
Inflorescences		racemes loosely 2–8-flowered; peduncles 3–12(15) cm; bracts 1–2 mm; pedicels 1–4 mm; bracteoles 0.
Flowers		horizontal or nodding at anthesis; calyces 5–9 mm, strigillose with black or partly black hairs; tubes 3.5–6 mm; teeth subulate, 1.4–3 mm; corollas 9.5–13.2 mm; whitish, sometimes lavender-tinged; ovules (14)17–29.
Fruits		unilocular to partially bilocular, irregularly pendulous, humistrate, obliquely oblong-ellipsoid; somewhat arcuate, strongly obcompressed, 12–22 × 4–6.5 mm, generally red-mottled, strigillose; valves coriaceous; woody; stipes 1.5–3.5 mm.

	Astragalus pauperculus	Astragalus salmonis
Distribution	[WildflowerSearch map] [BONAP county map]	[WildflowerSearch map] [BONAP county map]
Discussion		Dry sites, sagebrush, stony flats and hillsides. Flowering Apr–Jun. 800–2000 m. BR, BW, Lava, Owy. ID, NV. Native.
Source		Flora of Oregon, volume 2, page 673 Richard Halse
Sibling taxa	A. accidens, A. agrestis, A. alpinus, A. alvordensis, A. applegatei, A. arthuri, A. atratus, A. australis, A. beckwithii, A. californicus, A. calycosus, A. canadensis, A. caricinus, A. collinus, A. conjunctus, A. curvicarpus, A. cusickii, A. diaphanus, A. drummondii, A. eremiticus, A. filipes, A. gambellianus, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. iodanthus, A. kentrophyta, A. lemmonii, A. lentiginosus, A. malacus, A. misellus, A. mulfordiae, A. multiflorus, A. newberryi, A. nudisiliquus, A. obscurus, A. peckii, A. platytropis, A. purshii, A. reventus, A. robbinsii, A. salmonis, A. sclerocarpus, A. sheldonii, A. solitarius, A. spaldingii, A. sterilis, A. succumbens, A. tegetarioides, A. tetrapterus, A. toanus, A. tweedyi, A. tyghensis, A. umbraticus, A. vallaris, A. whitneyi	A. accidens, A. agrestis, A. alpinus, A. alvordensis, A. applegatei, A. arthuri, A. atratus, A. australis, A. beckwithii, A. californicus, A. calycosus, A. canadensis, A. caricinus, A. collinus, A. conjunctus, A. curvicarpus, A. cusickii, A. diaphanus, A. drummondii, A. eremiticus, A. filipes, A. gambellianus, A. geyeri, A. hoodianus, A. howellii, A. inflexus, A. iodanthus, A. kentrophyta, A. lemmonii, A. lentiginosus, A. malacus, A. misellus, A. mulfordiae, A. multiflorus, A. newberryi, A. nudisiliquus, A. obscurus, A. peckii, A. platytropis, A. purshii, A. reventus, A. robbinsii, A. sclerocarpus, A. sheldonii, A. solitarius, A. spaldingii, A. sterilis, A. succumbens, A. tegetarioides, A. tetrapterus, A. toanus, A. tweedyi, A. tyghensis, A. umbraticus, A. vallaris, A. whitneyi
Web links	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: OR Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Astragalus pauperculus

Astragalus salmonis

Trout Creek milkvetch

Habit

Plants perennial, shortly caulescent or subacaulescent, strigillose, hairs basifixed.

Stems

several–numerous, ascending-erect, 1–5 cm.

Leaves

mostly clustered at bases, 2.5–10 cm;

leaflets 9–15(19), narrowly oblong-elliptic, linear-oblong or oblong-obovate; (1)2–10 × 1–3 mm;

tips obtuse to subacute;

surfaces abaxially pubescent, adaxially glabrous to glabrate;

stipules 2–5 mm; free.

Inflorescences

racemes loosely 2–8-flowered;

peduncles 3–12(15) cm;

bracts 1–2 mm;

pedicels 1–4 mm;

bracteoles 0.

Flowers

horizontal or nodding at anthesis;

calyces 5–9 mm, strigillose with black or partly black hairs;

tubes 3.5–6 mm;

teeth subulate, 1.4–3 mm;

corollas 9.5–13.2 mm; whitish, sometimes lavender-tinged;

ovules (14)17–29.

Fruits

unilocular to partially bilocular, irregularly pendulous, humistrate, obliquely oblong-ellipsoid; somewhat arcuate, strongly obcompressed, 12–22 × 4–6.5 mm, generally red-mottled, strigillose;

valves coriaceous; woody;

stipes 1.5–3.5 mm.