亚东高山豆 ya dong gao shan dou

Taproot straight. Stems long, branched. Leaves 3-5.5 cm, 7-15-foliolate; stipules broadly ovate, membranous, abaxially hairy, adaxially glabrous, apex rounded or acuminate; petiole pilose; leaflets elliptic to obcordate, 7-10 × 6-8 mm, both sur­faces pilose, apex parted to bifid. Umbel 1- or 2-flowered; ra­chis pilose, usually ca. as long as leaves; bract linear, ca. 1 mm; pedicel ca. 2 mm; bracteole lanceolate, slightly shorter than bract. Calyx brown, narrowly campanulate, ca. 5 mm. Corolla purple; standard orbicular, ca. 10 × 8 mm, base narrowed to claw, apex retuse; wings obliquely obovate, ca. 9 × 4 mm, claw curved, auriculate; keel nearly triangular, ca. 4 × 1.5 mm. Ovary cylindric, densely villous. Legume ca. 2 cm, pilose. Fl. May-Jun, fr. Jul-Sep.

● Grasslands on hills, thickets; 3000-4100 m. Xizang.