112. Astragalus macropterus Candolle, Prodr. 2: 283. 1825.
大翼黄耆 da yi huang qi
Astragalus karaculensis Ovczinnikov & Rassulova; A. longipes Karelin & Kirilov (1841), not Steudel (1840); A. multicaulis Ledebour; A. pseudomacropterus Karmyscheva; A. vicioides Ledebour; A. vicioides var. longipes Trautvetter.
Plants 20-90 cm tall, covered with appressed to subappressed hairs 0.1-0.35 mm. Stems several, simple or branched, sparsely to loosely covered with white hairs, toward nodes or elsewhere with scattered black hairs, sometimes glabrescent. Leaves 4-7 cm, subsessile; stipules 3-5 mm, free, soon falling; rachis sparsely to loosely hairy; leaflets in 4-9 pairs, narrowly oblong to oblong, 3-15(-20) × 1-7 mm, abaxially sparsely to loosely hairy, adaxially glabrous, apex acute to obtuse. Racemes 3-12 cm, loosely many flowered; peduncle 5-15 cm, glabrous or sparsely to loosely hairy; bracts whitish, 1-1.5 mm, hairy, soon falling. Calyx 2.5-3 mm, loosely covered with white and predominantly black hairs; teeth 0.5-1 mm. Petals purple or yellowish with purple keel; standard elliptic, 9-11 × 4-5.5 mm, mostly without distinct claw, apex rounded to retuse or more rarely emarginate; wings nearly as long as standard, limbs obtuse to more rarely slightly incised; keel 5-6 mm. Legumes sessile, obliquely ovoid, 7-9 mm, ca. 3 mm high, keeled ventrally, widely flattened to slightly impressed dorsally, incompletely 2-locular to nearly 2-locular; valves brown, glabrous.
Steppes, stony slopes, in scrub formations; 1600-3800 m. Gansu, Xinjiang [Afghanistan, Kashmir, Kazakhstan, Kyrgyzstan, Mongolia, Pakistan, Russia (Siberia), Tajikistan].