217. Astragalus lasiopetalus Bunge, Delect. Sem. Horti Bot. Dorpat. 1839: 7. 1839.
毛瓣黄耆 mao ban huang qi
Astragalus lasianthus C. A. Meyer; A. ulacholensis B. Fedtschenko.
Plants 20-40 cm tall, subacaulescent to caulescent, ± densely covered with soft white hairs 0.5-3 mm. Stems (1-)3-15 cm, densely spreading hairy. Leaves 15-30 cm; stipules 10-15 mm, adnate to petiole for ca. 1 mm, loosely hairy, toward margins densely hairy; petiole 4-7 cm, like rachis densely covered with spreading hairs 2-3 mm; leaflets in 9-12(-15) pairs, ovate to elliptic, 10-25(-32) × 7-16(-20) mm, abaxially sparsely covered with ascending hairs, adaxially glabrous or nearly so, apex rounded and mostly with a minute cusp. Racemes densely (2-)6-10-flowered; peduncle 0.5-4 cm, spreading hairy; bracts 8-14(-20) mm, hairy. Calyx campanulate, 12-15(-18) mm, villous; teeth 9-10 mm. Petals yellow, standard and wings hairy; standard oblong-pandurate, 14-18 mm, distinctly constricted in middle, apex slightly emarginate; wings 11-16 mm; keel 9-11 mm, limbs ± straight. Legumes sessile, 12-18 mm, 6-8 mm high and 3-4 mm wide, with a beak 1-2 mm, mostly completely 2-locular; valves thin, long villous.
Riversides, meadows, dry slopes, often in saline soils; 1800-2000 m. Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia, Uzbekistan].