Description from Flora of China
Shrubs or small trees, 1-3 m. Branchlets densely brown tomentose. Leaves 10-15 cm; stipules subulate, ca. 4 mm; petiole 1-2 cm; leaflets 11-15, elliptic-oblong or ovate-oblong, 3-4 × 1.5-2 cm, papery, tomentose abaxially, glabrous and light green adaxially, lateral veins obscure, base rounded or narrowed, apex acute or acuminate. Racemes terminal, ca. 6 cm, densely tomentose; rachis ca. 2 cm. Flowers 12-15 mm. Calyx 2-3 × 4-5 mm, densely tomentose; teeth 5, equal, triangular. Corolla white; standard obovate-oblong or orbicular, ca. 10 × 6 mm, base abruptly clawed, apex retuse; wings oblong, petal ca. 7 × 3.5 mm, auricle nearly absent, claw slender; keel nearly falcate, obtuse at apex, petal ca. 6 × 4 mm, claw ca. 3 mm. Stamens 10, free or slightly fused at base. Ovary sparsely brown hairy; ovules 4. Legumes terete, 4-6 cm, brown hairy, slenderly beaked, constricted between seeds if more than 1. Seeds 1, rarely 2 or 3, yellow, ovoid, ca. 8 mm, lustrous. Fl. and fr. Apr-Sep.
Valley scrub; below 1000 m. Fujian, Guangdong, Hunan, Zhejiang [Japan].