Trees evergreen, 6-10 m, to 30 cm d.b.h. Stems terete, glabrous; bark brownish. Branchlets, petiole, rachis, and inflorescence densely appressed rusty brownish pubescent. Leaves imparipinnate, 10.5-19.5 cm; petiole 1.5-2.1 cm; rachis 3-6 cm, not elongate at uppermost leaflet pair; leaflets 5-7; petiolule 2-5 mm, densely appressed pilose; blades oblong-lanceolate or oblong, 5-11 × 1.5-3.5 cm, densely appressed rusty or brownish pilose abaxially, glabrous adaxially, base narrowly cuneate, apex caudate; midvein raised abaxially, impressed adaxially, lateral veins 10-15 pairs, arcuate with conspicuous veinlets abaxially, inconspicuous adaxially. Panicles terminal, 12-15 cm, sparsely branched. Flowers congested, 1-1.2 cm; pedicel short. Calyx teeth ovate, abaxially densely appressed brownish tomentose, apex obtuse. Corolla white; standard suborbicular, apex retuse, 7-8 mm, claw 2-5 mm; wings and keel oblong, ca. 8 × 2 mm, claw ca. 3 mm. Ovary densely appressed villous; ovules 2 or 3; style slightly puberulent. Legumes ovate or elliptic, fleshy, turgid, 3-5 × 2-2.5 × ca. 1.5 cm; valves thickly leathery, densely appressed brownish tomentose outside, glabrous inside, septum absent. Seeds 1 or 2, chestnut-brownish, subelliptic or suborbicular, slightly compressed, ca. 1.5 × 1.7 × 1 cm, glossy; hilum small, ca. 1 mm. Fl. May, fr. Oct-Nov.
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