四川黄耆 si chuan huang qi

Astragalus wenxianensis Y. C. Ho.

Plants perennial, with subappressed white hairs 0.5-0.8 mm. Stems several, prostrate, up to 40 cm, very scarcely hairy to glabrescent. Leaves 2-5 cm, nearly sessile; stipules free, ca. 4 mm, sparsely hairy; rachis sparsely hairy; leaflets in 4-7 pairs, elliptic to obovate, rounded to distinctly emarginate, 3-9 × 2-5 mm, adaxially glabrous and abaxially sparsely hairy or both surfaces to loosely hairy. Racemes at first densely, later rather loosely, 4-9-flowered; peduncle 3-5 cm, very sparsely to rather loosely hairy; bracts ca. 1 mm, ciliate, soon falling. Calyx 3.5-5 mm, sparsely hairy to nearly glabrous; teeth unequal, 1.5-3 mm. Petals white, yellowish, or pink; standard widely elliptic, 8-10(-13) × 5-6 mm, apex deeply emarginate; wings 6-9(-10.5) mm; keel 8-10(-13) mm. Stigma with minute hairs. Legumes with a stipe 2-7 mm, erect, narrowly linear, straight to slightly curved, 15-25 mm, ca. 4 mm high and wide, with a beak 1-2 mm, 2-locular; valves blackish, glabrous to loosely appressed hairy when young.

● 400-3300 m. Gansu, Sichuan.