Astragalus multiflorus
Gerald D. Carr

Flora of Oregon

Plants perennial, caulescent, strigillose, hairs basifixed.

Stems several–numerous, prostrate to ascending or erect, 10–50 cm.

Leaves 2–9 cm; leaflets (7)11–21(25), narrowly oblong to elliptic, linear, oblanceolate or obovate, 3–24(27) × 0.4–6 mm, tips acute to obtuse, mucronate or emarginate, surfaces abaxially strigose, adaxially glabrous; stipules 1.5–8 mm, at least lowermost connate-sheathing.

Inflorescences racemes loosely or remotely 3–23-flowered; peduncles 0.2–4 cm; bracts 0.5–3 mm; pedicels 0.7–3.2 mm; bracteoles 0–2.

Flowers ascending at anthesis; calyces 2.5–6 mm, strigillose with black, white, or a mixture of black and white hairs, tubes 2–3 mm, teeth subulate or linear, 0.7–3 mm; corollas 6–9(11) mm, white to ochroleucous or pink-purple; ovules 3–9.

Fruits unilocular, pendulous, elliptic to oblong, straight or curved, laterally flattened, bicarinate, 7–17 × 2.5–4.5 mm, dark brown to black at maturity, usually glabrous or with few scattered white hairs; valves papery; stipes 1–7 mm.

2n=24.

Sagebrush communities. Flowering May–Aug. 1200–1800 m. BR. ID, NV; north to Yukon Territory, northeast to Manitoba, east to MN, southeast to CO. Native.

This widely distributed species has only recently been found in Malheur County; it is probably native.

Photo images

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Herbarium specimens

https://intermountainbiota.org/imglib/seinet/intermt/RENO_V/00110/110786_tn.jpg
https://www.pnwherbaria.org/images/thumbnail.php?Image=CIC034400.jpg
https://oregonflora.org/imglib/OSU_V/OSC-V-255/OSC-V-255255_tn.jpg
https://intermountainbiota.org/imglib/seinet/intermt/RENO_V/00111/111643_tn.jpg
https://botanydb.colorado.edu/COLO_V/00364/00364505_tn.jpg