藏西黄耆 zang xi huang qi

Astragalus minutofoliolatus Wendelbo.

Plants subshrubby, acaulescent to shortly caulescent, with white hairs 0.3-0.7(-1) mm, inflorescence also with black hairs. Stems, if present, up to 5 cm. Leaves 8-22 cm; stipules distinctly longitudinally nerved, 10-15 mm, adnate to petiole for 3-5 mm, lower ones ciliate and often hairy at base, upper hairy, often connate around petiole for 1-3 mm; petiole 3-6 cm, like rachis sparsely to loosely covered with ascending hairs up to 1 mm, toward end of vegetation period hardening and often spiny, persistent to next year or even longer; leaflets in 17-23 pairs, elliptic to obovate, 2-9 × 1-4.5 mm, abaxially and at margins sparsely ± appressed hairy, adaxially glabrous, apex rounded to slightly retuse. Racemes 2-5-flowered; peduncles several, 0.5-1.5 cm, appressed hairy; bracts 8-10 mm, with white and also black hairs. Bracteoles often present, up to 2 mm. Calyx 15-17 mm, sparsely to rather densely covered with ascending white and blackish to black hairs; teeth 4-8 mm. Pet­als yellow; standard obovate, 24-27 × 9-11 mm, apex emar­ginate; wings 22-23 mm; keel 19-21 mm. Legumes with a stipe 3-4 mm, 20-25 mm, 5-6 mm high and 8-10 mm wide, nar­rowly grooved ventrally and dorsally, with a straight beak 3-4 mm, 2-locular; valves glabrous.

Moraines, among debris in alpine zone; 3600-5000 m. Xizang [Afghanistan, India, Kashmir, Pakistan].