石生黄耆 shi sheng huang qi

Plants 17-25 cm tall, with appressed to ascending or sometimes also ± spreading and with exception of legumes only white hairs 0.4-0.6 mm. Stems few to several, 15-20 cm, rather densely hairy, partly glabrescent. Leaves 2.5-6 cm; stipules whitish membranous, 2-3 mm, at least lower ones behind stem connate to middle, hairy; petiole 0.5-1.5 cm, like rachis loosely to rather densely hairy; leaflets in 7-10 pairs, obovate, 4-7 × 1.5-3 mm, both surfaces loosely to rather densely covered with ascending hairs, apex mostly retuse. Racemes subumbellate, up to 15-flowered; peduncle 2-3.5 cm, rather densely hairy; bracts ca. 1 mm, hairy. Calyx 3-4 mm, rather densely appressed hairy; teeth ca. 2 mm. Petals pale purplish; standard nearly orbicular, 6-8 × 5-6 mm, apex emarginate; wings 5-7 mm; keel 7-9 mm, limbs 4-5.5 × 2.5-3 mm. Legumes with a stipe ca. 2 mm, 8-10 mm, ca. 3 mm high and wide, nearly 1-locular; valves covered with subappressed white or white and black hairs 0.3-0.5 mm.

● Qinghai, Sichuan, Xinjiang, Yunnan.