Trees evergreen, trunk vertical, to 15 m, to 44 cm d.b.h. Bark of stems grayish green, smooth when young, with rounded convex lenticels or longitudinal striations forming with age. Branchlets densely appressed yellowish brown tomentose; winter buds naked. Leaves imparipinnate, 14-17(-23) cm; petiole and rachis densely appressed gray pubescent; leaflets 17-23; petiolule short, ca. 2 mm; blades oblong-lanceolate or ovate-lanceolate, 2.7-5(-7) × 1.1-1.5 cm, thinly leathery, densely appressed yellowish brown pubescent abaxially, faintly appressed pubescent or glabrous adaxially, base rounded or broadly cuneate, apex acute, acuminate, or obtuse, sometimes retuse; midvein raised abaxially, impressed adaxially, lateral veins 5 or 6(or 7) pairs. Infructescence racemose or few branched, terminal and axillary. Legumes oblong or rhombic, compressed, 4-6 × 1.6-2.3 cm, glabrous; valves thickly woody, black at maturity. Seeds 1-3, red-brown, suborbicular, ca. 10 × 8 mm; hilum ca. 3 mm.
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