Trees, 8-15 m tall. Bark grayish brown, rough. Branchlets yellow tomentose, gradually glabrescent, scattered with minute prominent lenticels. Leaves 15-19-foliolate; rachis 25-30 cm, including petiole 5-7 cm; stipels ca. 1.5 mm, caducous; leaflet blades oblong-lanceolate to oblong, 4-9 × 1.5-2.5 cm, papery, abaxially yellow velutinous especially on veins, adaxially finely appressed pubescent, secondary veins 7 on each side of midvein, base obtuse to broadly cuneate, apex acute. Pseudoracemes axillary, 20-25 cm, shorter than subtending leaf; rachis nodes with 4 or 5 flowers clustered on a short decumbent spur; peduncle 3.5-8 cm, yellow tomentose. Pedicel 4-5 mm. Flowers 1.3-1.6 cm. Calyx ca. 5 mm; teeth longer than tube, cuspidate. Corolla white or lilac; standard broadly orbicular, outside apically sparsely puberulent. Ovary densely sericeous, with 6 or 7 ovules. Legume linear, 9-14 × 1.3-1.6 cm, flat, thinly leathery, brown tomentose, apex truncate and with a beak; suture prominent. Seeds 3-5 per legume, chestnut-brown, oblong, ca. 12 × 8 mm, compressed. Fl. May-Aug, fr. Jul-Nov.
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