Trees evergreen, to 15 m tall. Youngest branchlets appressed yellowish brown pubescent, glabrous with age; bud naked, stalked, gray pubescent. Leaves imparipinnate, alternate or rarely subopposite, 15-17 cm; petiole and rachis glabrous; petiole 2.5-3.5 cm; rachis 3-5 cm, prolonged 1.4-2 cm below terminal leaflet; leaflets (5-)7; petiolule ca. 3 mm, glabrous, grooved; blades oblong, 5.2-8.5 × 1.7-2.6 cm, thinly leathery, both surfaces glabrous, base cuneate or rarely rounded, apex acuminate or long acuminate; midvein impressed adaxially, lateral veins and veinlets raised when dried. Inflorescence rachis brown pubescent. Legumes oblong, elliptic-obovate, or long ovate, 3.2-4.4 × 1.8-2 cm, base rounded or cuneate, apex obtuse, mucronate, stipe 3-4 mm; calyx persistent and small, densely appressed fulvous pilose; valves thinly leathery, less than 1 mm thick, blackish brown when dried, glabrous, internal septum absent. Seeds 1-3, red to red-purple, suborbicular, slightly compressed, ca. 10 × 9 × 7 mm; hilum elliptic, retuse, ca. 2 mm.
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