Tree 12-40 m by 20-50(-180?) cm, sometimes buttressed. Branchlets 0.5 cm thick, glabrescent; pith with a peripheral cylinder of rather large vascular strands and mostly some scattered small ones in the central part. Stipules caducous, inserted at the conjunction of branchlet and petiole, about reniformous, 3-5(-12) mm. Leaves (2-)3-4(-5)-jugate, 15-37 cm long, glabrous. Leaflets ovate to oblong-lanceolate, 4¼-6½-18 by 1.5-3.5-7.25 cm, coriaceous, shining beneath; base subequilateral, broadly cuneate (to subcordate); margin entire; apex gradually to subabruptly, shortly and bluntly acuminate; nerves 5-15 pairs (angle 60-70°), widely spaced, slightly curved, distinctly arching at some distance from the margin, not very conspicuous above; reticulations nearly inconspicuous. Inflorescences terminal, some Main branches sometimes in the upper leaf-axils, ♂ ones laxly paniculate, (7-)15-20(-30) cm long, thinly tomentose, many-flowered; female ones more dense, 2-10 cm long, more densely tomentose and few-flowered. Flowers 0.75-1 cm, pubescent outside. Calyx nearly truncate, in ♂ flowers 2½-4 mm high, in female ones 6 mm. Stamens 6, glabrous, in ♂ flowers slightly connate at the base and sometimes adnate to the disk, in female flowers rather strongly reduced, inserted on the disk. Disk in ♂ flowers pistilloid, globular, sometimes stalked, tapering into a long style-like appendix, in total 2 mm high; in female flowers adnate to the receptacle, if this is concave; always glabrous. Pistil glabrous. Infructescences 6-8 cm long, densely and shortly, ferrugineously woolly-tomentose, sometimes glabrescent, with 1-2(-4) fruits; calyx flat, 3-lobed, 11-14 mm diam. Fruits ellipsoid to obovoid, round to rounded-triangular in cross-section, glabrous, 3-6 by 1¾-3 cm; pyrene smooth; lids 3-5 mm thick. Seeds 1-3; sterile cells more or less reduced.
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A tree. It grows up to 40 m tall. The trunk can be 50 cm across. It can have buttresses. The leaves have 2-5 pairs of leaflets. The flowering stalks are 6-8 cm long. They can have 4 fruit. The flowers are in groups that are spreading and hairy. The fruit is fleshy and oval with a stone inside. It is 3-6 cm long by 2-3 cm wide. The fruit are green and oval. It contains 1-3 seeds.
A common understorey tree in lowland and hill forest. Primary rainforests, usually at elevations up to 450 metres, occasionally to 1,150 metres.
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Primary forests, up to 450 m (rarely up to 1150 m), also in secondary and swamp forests, fl. Mainly Nov.-May;, fr. Mainly Sept.-April.
A tropical plant. It grows in primary forest and up to 1150 m altitude above sea level.
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