半圆黄耆 ban yuan huang qi

Plants ca. 15 cm tall, with appressed and spreading white hairs. Stems several, sparsely covered with white hairs ca. 0.1 mm or even shorter and subglobose and with some scattered, very fine, spreading hairs 1-1.5 mm, soon glabrescent. Leaves 2.5-5 cm; stipules green, 3-3.5 mm, behind stem connate to middle or higher up, sparsely hairy; petiole 0.5-1.5 cm, like rachis sparsely covered with very short appressed hairs up to 1.5 mm and with fewer scattered spreading hairs; leaflets in 6-8 pairs, elliptic, 4-7 × 2-4 mm, abaxially sparsely to loosely cov­ered with appressed hairs 0.3-0.5 mm, adaxially subglabrous, more rarely with some long ± spreading hairs especially adax­ially, apex obtuse to sometimes emarginate. Racemes short, rather loosely 7-13-flowered; peduncle 2.5-5.5 cm, hairy like stem; bracts membranous, ca. 1 mm, subglabrous. Calyx 3-3.5 mm, loosely appressed white hairy; teeth ca. 1.5 mm. Petals with dark purplish hue; standard ovate, 7-7.5 × ca. 4 mm, apex emarginate; wings ca. 6 mm; keel ca. 7.5 mm, limbs ca. 5 × 2 mm. Legumes nodding, with a stipe ca. 2 mm, oblong, strongly curved, 12-14 mm, 2-3 mm high and 1.5-2 mm wide, keeled ventrally, deeply grooved dorsally, shortly acuminate, 1-locular; valves loosely covered with appressed white hairs 0.2-0.3 mm.

● Xizang.