Shrubs, erect, much branched, white pilose. Leaves 3-foliolate; petiole 1-4.5 cm, pilose; leaflets broadly elliptic or ovate-elliptic, terminal one 3-6(-9) × 2-4 cm, abaxially adpressed pubescent, adaxially sparsely pubescent, base rounded or rounded-cuneate, apex acuminate to acute, mucronate. Racemes axillary or in terminal panicles, overtopping leaves; peduncle 3-5 cm. Pedicel ca. 3 mm, pubescent. Calyx 4-5 mm, middle 4-lobed; lobes ovate-lanceolate, acuminate at apex. Corolla purplish red; standard obovate, 9-10 mm, base clawed, apex emarginate; wings oblong, 6-8 mm, auriculate, slenderly clawed; keel slightly falcate, 8-9 mm, auriculate, slenderly clawed. Ovary hairy. Legume ovoid-elliptic, ca. 9 × 10 mm, pubescent, reticulate veined. Fl. Jul-Aug, fr. Sep-Oct. 2n = 20.
Rocky places along rivers. Mountain slopes and forests; at elevations up to 1,000 metres in Anhui, Henan and Zhejiang Provinces, China.
Can be grown by cuttings or seedlings. Seeds needs soaking.
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