Tree 10.5-20 m high. Stipules intrapetiolar, c. 3 mm long. Leaves (2-) 3-or 4-foliolate, shortly petioled; petiole and rachis (1.5-)3-5(-9) cm long, glabrous. Leaflets chartaceous or subcoriaceous, elliptic, elliptic-lanceolate, ovate-or obovate-elliptic, 6-14.5 by 3-4.5 cm, the lower ones usually smaller; apex acuminate or caudate; base obtuse or cuneate, more or less symmetric; glabrous, sometimes sparsely puberulous usually on the midrib beneath when young; nerves 6-10 per side; petiolules short, 2-5 mm, glabrous. Inflorescences terminal or axillary, solitary or rarely 2 in an axil, pendulous, up to 22 cm long, puberulous, rather loosely flowered; bracts up to c. 3 mm long, some of them 3-lobed and the middle lobe pinnately relobed with 1 terminal and 2 pairs of side lobelets; bracteoles minute, triangular, c. 0.3 mm long; pedicels 2-6 mm, articulated at the base, sparsely puberulous. Flowers easily falling off, sparsely puberulous, glabrescent, or almost glabrous outside. Hypanthium c. 1 mm long, glabrous inside. Calyx lobes unequal, broadly ovate or suborbiculate, 3-4 by 2.5-3 mm, glabrous inside. Stamens 10; filaments (observed from flower buds or young flowers) 2-5 mm, glabrous; anthers c. 1 mm long. Pistil shortly stipitate; stipe c. 1 mm long, free, glabrous; ovary c. 2 mm long, 4-(or 5-)ovuled; style c. 3 mm, glabrous; stigma obscure, slightly thicker than the style. Pods broadly elliptic, 6 by 4-4.5 cm, with a short beak c. 7 mm long, brownish hairy, 1-(or 2-)seeded. Seeds suborbiculate, c. 2.5 cm across.
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