长毛荚黄耆 chang mao jia huang qi

Astragalus macrotrichus E. Peter.

Plants 2-3 cm tall, acaulescent, with exception of fruit covered with subappressed, only white hairs 2-3(-4) mm. Leaves 1.5-3 cm, 1-foliolate; stipules 6-8 mm, densely covered with asymmetrically bifurcate hairs, at margins with basifixed hairs; petiole 0.3-1.5 cm, densely covered with ± medifixed hairs 1-2 mm; leaflets widely elliptic to rhombic-elliptic, 8-16 × 8-12 mm, both surfaces loosely covered with subappressed, medifixed hairs. Racemes 1- or 2-flowered; peduncle up to 1 cm, densely hairy; bracts 3-4 mm, ciliate with basifixed hairs. Calyx 10-12 mm, loosely to rather densely hairy; teeth 5-6 mm. Petals yellow; standard narrowly elliptic, ca. 21 × 5 mm, apex emarginate; wings ca. 16 mm; keel ca. 14 mm. Legumes 15-18 mm, ca. 6 mm high and ca. 4 mm wide, apex acuminate; valves very densely villous, with tangled, flexuous, ascending to spreading, asymmetrically to extremely asymmetrically bi­furcate hairs 2-3 mm.

Gansu, Nei Mongol, Qinghai, Shanxi, Xinjiang [Mongolia, Russia (Siberia)].