Description from Flora of China
Shrubs, 1-2 m high, few branched. Branches gray-white pubescent. Leaves 15-20 cm; stipules linear, ca. 10 mm; petiole gray-brown pubescent; leaflets 19-25, subopposite or nearly opposite, ovate-lanceolate or long elliptic, 30-35 × ca. 10 mm, papery, pubescent on both surfaces, base rounded, slightly oblique, apex acuminate, mucronate; petiolule less than 1 mm, hairy. Racemes terminal; rachis sulcate, gray-white pubescent. Flowers many, dense; pedicel 4-5 mm; bract linear, equal to pedicel in length, hairy. Calyx campanulate, ca. 6 mm; teeth 5, unequal. Corolla purple-red; standard oblong, ca. 6 × 4 mm, 2-auriculate at middle; wings hastate, slightly rugose; keel slightly shorter than standard, falcate, apex rounded, 1-auriculate at base. Stamens 10, 1 free and other 9 fused at base. Ovary terete, hairy; ovules many; stigma capitate, very small. Legumes moniliform, slender, 6-10 cm, gray-white pubescent, dehiscent along sutures. Seeds 3-6, brown-red, long ovate or elliptic. Fl. and fr. Feb-Aug.
● Mountain forests; 1000-1700 m. Guizhou, Yunnan.