Shrubs, 1-1.5 m tall. Stems blackish brown, terete; young branches angular, primarily with appressed white and brown medifixed symmetrically 2-branched trichomes, glabrescent. Stipules linear, 4-6 mm. Leaves 4-8 cm, 3-or 5-foliolate; petiole and rachis with appressed medifixed trichomes; petiole 1.2-3.5 cm; rachis adaxially grooved; stipels minute, caducous; petiolules 1.5-2 mm, hairy; leaflet blades opposite, elliptic, ovate-elliptic, or elliptic-obovate, 1-4 × 0.8-5.5 mm, papery, abaxially with dense appressed short medifixed trichomes, adaxially with longer medifixed trichomes, midvein adaxially prominent, secondary veins 6 on each side of midvein, base cuneate to rounded, apex obtuse to acuminate and mucronate. Racemes ca. 6 cm; peduncle and rachis with dense appressed white medifixed trichomes; peduncle 5-9 mm; bracts ovate, ca. 1.5 mm, caducous. Pedicel ca. 1.5 mm, trichomes white. Calyx 3-3.5 mm, outside with appressed medifixed trichomes; tube ca. 2 mm; teeth triangular-lanceolate, 1-1.5 mm. Corolla pinkish; standard elliptic-obovate, 8.5-11 × 3-3.5 mm, outside hairy, base acuminate, apex obtuse; wings 8.5-11 mm; keel slightly longer than other petals. Stamens 8-9 mm; anthers ovoid-globose, glabrous. Ovary densely appressed white hispid; style glabrous. Legume brown, linear, cylindric, ca. 4.5 cm, appressed white hispid; endocarp not blotched. Seeds cubic. Fl. May-Jun, fr. Jul-Aug.
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