Trees evergreen, to 15 m, to 20 cm d.b.h. Bark grayish green. Branchlets densely appressed pallid pannose. Leaves imparipinnate, 18-30 cm; stipule broadly triangular, densely appressed white woolly; petiole 3-6.2 cm, densely appressed pubescent; leaflets 5-7; petiolule 4-9 mm; blades obovate-oblong, 6.7-11.7 × 2.5-4.7 cm, leathery, base cuneate-subrounded, apex acute, mucronate; lateral veins 12-22 pairs, arcuate, pubescent abaxially with brown hairs or densely white woolly hairs. Panicles terminal, up to 20 cm; flowers subsessile. Calyx broadly campanulate; teeth woolly abaxially, sparsely hairy adaxially. Corolla white; standard suborbicular, ca. 8 × 1 mm, apex retuse; petal stalk ca. 3 × 2 mm; wings oblong, ca. 10 × 4 mm; keel falcate, nearly same size as wings, laterally 1-auriculate at base. Stamens nearly equal, 0.7-1.5 cm. Ovary ovate or elliptic, densely appressed pubescent; ovules 3-6; style filiform, glabrous. Legumes elliptic or suborbicular, 2.5-5 × 2.5-3 × ca. 1.3 cm, turgid, ends obtuse; valve walls ca. 2 mm thick, septum absent. Seeds 1 or 2, brownish red, subrhombic or rounded, asymmetric at base, 1.8-2.5 × ca. 1.4 cm, fleshy, glossy; hilum small, ca. 1 mm, elliptic, indented, slightly oblique. Fl. Jun-Jul.
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