Tree 10-40 m by 25-100 cm, buttresses 1-2 m high. Branchlets 2.5-5 mm thick, pubescent to glabrous; pith with some to many, rarely without vascular strands. Leaves 1-5-jugate. Petioles (3.5-)4.5-8.5(-15.5) cm, usually strongly flattened at the base, pubescent, glabrescent, pith with some to many vascular strands. Leaflets lanceolate or elliptic to oblong, 4-22 by 2-9.5 cm, rigidly pergamaceous, glabrous; base (subcordate to) rounded (to cuneate); apex usually rather abruptly, shortly and bluntly acuminate; nervation prominent beneath, nerves (6-)8-18 pairs (angle 60-90°), sinuous, curved5 faintly arching near the margin. Panicles terminal, sometimes with additional axillary ones, often branched from the base, ♂ ones 3-30 cm, female ones 8-21 cm. Flowers 2-4 mm, densely minutely tomentose. Calyx 1-1.25 mm high. Filaments free from the disk or slightly confluent with it. Disk cupular, 6-lobed. Ovary tomentose, pistil in ♂ flowers strongly reduced. Fruits ovoid to ellipsoid, sometimes oblique, (1½-)1¾-3½ by ¾-1¾ cm, acute at the apex, rounded at the base, said to be orange when ripe. Cotyledons contortuplicate, palmatifid (?).
Primary forests, sometimes swampy, up to 100(-475) m. SAN 25326 and 29004 are collected at 1400 and 1500 m altitude resp. FL Jan.-Aug., fr. Mainly Oct.-April.
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