Description from Flora of China
Shrubs, 1-2 m tall. Young branches appressed or ascending hairy. Petiole 0.5-4 cm, appressed or ascending pubescent; stipels present at top of petioles, linear, 1-2 mm, sometimes also present at top of rachis; leaflets oblong, obovate, or ovate to narrowly ovate, terminal one 1-4 × 0.5-2.5 cm, abaxially ± densely appressed or ascending pubescent, adaxially glabrous or sparsely pubescent, base obtuse or rounded, apex retuse and mucronulate. Racemes 2-13 cm; rachis and pedicels appressed or ascending pubescent mixed with glandular hairs. Pedicels 3-9 mm. Calyx ± densely shortly ascending hairy mixed with glandular hairs; tube 1.5-2.5 mm; lobes narrowly triangular, 1.3-2.5 mm. Corolla purple to pinkish white; standard elliptic, 10-14 mm, obtuse at apex; wings 10-13 mm, clawed at base; keel incurved, 11.3-16.2 mm, clawed at base. Ovary 2.5-4 mm; style incurved, 7.5-9 mm. Legume obliquely ovoid to elliptic or obovoid, 6-11 × 3-5 mm, apex acute. Seeds pale brown, reniform, 2.5-3.6 × 1.6-2 mm.
● Mountain slopes, sunny thickets, rocky mountains, roadsides, grasslands, streamsides, waste grasslands, valleys, forest margins, forests; 400-3200 m. Guizhou, Sichuan, E Xizang, Yunnan.