Shrubs 50-100 cm tall. Bark yellowish brown, with grayish corky stripes. Leaves digitate, 4-foliolate; petiole 3-5 mm and persistent on long branchlets, 1-3 mm and caducous on short branchlets; leaflet blades obovate to elliptic-obovate, 3-8 × 2-3.5 mm, both surfaces pubescent, base cuneate, apex obtuse. Flowers solitary. Pedicel 0.8-1.5 cm, articulate usually apically from middle, densely pubescent. Calyx tube tubular-campanulate, 6-7 mm, pubescent. Corolla yellow, 1.5-1.8 mm; standard broadly ovate, claw 1/6-1/5 as long as limb, apex emarginate; wings narrowly oblong, claw ca. 1/3 as long as limb, auricle linear and 1/2-2/3 as long as claw; keel broader than wings, claw 1/2-2/3 as long as limb, auricle obtuse. Ovary linear, densely pubescent. Legume oblanceolate when young, 1.5-2 cm, pubescent. Fl. May-Jun, fr. Jun-Jul.