Tree 5-20(-35) m by 8-40(-100) cm, sometimes a large shrub; no buttresses. Branchlets 3-5 mm thick, smooth, long reMain ing pubescent; pith without or with many peripheral vascular strands. Leaves (0-)2-4-jugate. Petioles terete to distinctly flattened at base, 3-9½ cm, pubescent or puberulous to glabrous, pith with 1 or few, rarely without vascular strands; base of the petiole, nodes of the rhachis, and ends of the petiolules distinctly swollen. Leaflets obovate or ovate to oblong-lanceolate, 6-22 by 2½-11 cm, chartaceous, often bullate; indumentum variable; base oblique, cuneate to rounded; apex more or less abruptly acuminate, acumen ½-3½ cm by 1-3 mm, often slightly broadened at the tip, blunt; nervation usually distinctly prominent beneath, nerves 7-12 pairs (angle 50-80°), slightly curved, often arching near the margin. Panicles axillary, together pseudoterminal, rarely terminal, densely and minutely pubescent, ♂ slender, 15-60 cm long, laxly branched from the base, branches up to 25 cm long, flowers usually clustered; female ones pyramidal, lax and relatively few-flowered, 2-25 (-40) cm, peduncle 0-4 cm, branches up to 9 cm long. Flowers 1½-2½ mm, sparsely pubescent to glabrous. Calyx in ♂ flowers ¾-1m, in female ones 1-½ mm. Stamens adnate to the disk, episepalous ones slightly longer. Disk cupular, thick. Pistil in ♂ flowers moderately to entirely reduced. Fruits ovoid, slightly oblique, 1.5-2.5 by ¾-1½ cm, rounded at both ends; flower remains long persistent. Cotyledons consisting of 3 separate, petioluled lobes, contortuplicate.
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A small to medium sized tree. It can grow 30 m tall. The trunk is 40 cm across. The bark is pale grey. It is smooth and scaly. The leaves are compound with 1-4 pairs of leaflets. The leaflets are 6-22 cm long by 3-11 cm wide. The flowers are in groups in the axils of the leaves. The fruit are oval and 1.5-2.5 cm long by 1-1.5 cm wide.
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