Tree to 21 m high, c. 77 cm in diam.; buttresses equally plank-like, up to 90 cm high. Stipules intrapetiolar, minute, c. 2 mm long, puberulous. Leaves 6-9-(or 10-)foliolate, distinctly petioled; petiole and rachis up to 10( — 18) cm long, puberulous. Leaflets chartaceous or membranous, elliptic, elliptic-oblong, ovate to lanceolate, or obovate to ob-lanceolate, (3.5-)5-10(-16) by (1.5-)2.5-3(-6) cm, the lower ones usually smaller; apex acuminate or acute; base obtuse, rounded, or cuneate, more or less symmetric; glabrous above, glaucous, loosely puberulous (except glabrous on the nerves) beneath; nerves 5-7(-10) per side; petiolules short, 2.5-5 mm, puberulous. Inflorescences axillary or terminal, usually erect, up to c. 15(-25) cm long, the rachis greyish puberulous, glabrescent or glabrous, rather loosely flowered; bracts and bracteoles caducous, often hardly found on herbarium specimens; bracteoles subulate, 3-4 mm long; pedicels variable in length (depending on the developing stage of flowers), 6-15(-22) mm, articulated at the base, greyish puberulous. Flowers white, easily falling off, greyish puberulous outside. Hypanthium c. 1.5 mm long, glabrous inside. Calyx lobes unequal, elliptic, broadly elliptic, or suborbiculate, 4-5 by 2-4 mm, glabrous except puberulous at the base inside. Stamens 10; filaments (observed from flower buds) c. 2 mm, glabrous; anthers 0.75 mm long. Pistil shortly stipitate; stipe c. 1 mm, long, free, glabrous; ovary c. 3 mm long, 2-(or l-)ovuled; style very short, c. 2 mm, glabrous or slightly hairy at the basal part; stigma indistinguishable. Pods broadly ellipsoid, ellipsoid, oblong, or obovoid, 7-12.5 by 5-8 by 1.5 cm, flattened, apex acute or obtuse with a short beak, tapering unequally at base, loosely reticulate, brown, finely velvety, valves thinly leathery, curling up on splitting, 1-(or 2-)seeded. Seeds shortly oblong, broadly elliptic, or suborbicular, flat, 3-4 by 2-3.5 by 1.5 cm.
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