Tree up to 35 m tall, with buttresses, evergreen. Leafy twigs (1-)2-8 mm thick, ± densely brown strigillose, scabridulous, drying brown; lenticels scattered. Leaves spirally arranged; lamina (sub)coriaceous, entire, elliptic to (sub)obovate, (3-)10-20(-30) by (1.5-)5-10(-15) cm (or pinnately lobed to parted and up to 55 by 35 cm), rounded to short-(sub)acuminate to apiculate, base obtuse to cuneate or to rounded, margin entire to repand (or crenate towards the apex), ± revolute; upper surface brownish puberulous to densely strigillose or to only (sparsely) strigillose on the midrib, smooth or scabridulous; lower surface brownish strigillose on the main veins to puberulous or to hispidulous on the smaller veins, smooth or ± scabrous; lateral veins (6-)10-20 pairs, none (or rarely one) branched or forked away from the margin, tertiary venation scalariform, ± prominent; petiole (0.5-)1-2(-2.5) cm long, 2-3 mm thick, brown strigillose, the epidermis persistent; stipules (0.5-)1-2(-4) cm, brown strigillose to strigose, caducous. Staminate inflorescences axillary, solitary; peduncle 0.2-1 cm long, brownish strigillose, ± scabrous; head obovoid to subglobose, 1.2-2 cm diam.; perianth tubular, c. 1.2 mm long, the apex 2-lobed, minutely puberulous; stamen c. 1.3 mm long, anther 0.1 mm long; interfloral bracts peltate, the apical part 0.2-0.3 mm diam., yellowish puberulous. Pistillate inflorescences axillary, solitary; peduncle 0.8-3(-4) cm long, brown strigillose, ± scabrous; head ellipsoid to subglobose (to depressed-globose); perianth tubular, hispidulous to muriculate, the apex ± convex; stigma simple; interfloral bracts peltate, the apical part 0.2-0.3 mm diam., yellowish puberulous. Infructescences subglobose, 4-9 cm diam., covered with 3-8 mm long, cylindrical apices of the perianths; fruits ellipsoid, 1.2-1.5 cm long.
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A medium sized tree. It grows to 45 m high. The trunk is 120 cm across. The buttresses can be 3 m high. The twigs are 2-6 mm thick. They have reddish hairs and ring like scars. It has small oval leaves. They are 6.5-32 cm long by 3.5-15 cm wide. There are hairs on the secondary veins underneath. The young leaves are deeply lobed. There are 9-20 pairs of secondary veins which go in loops and join near the leaf edge. The leaf stalks is 1-3 cm long. The flower groups occur singly in the axils of leaves. The male heads are yellow and rounded. They are 13-20 mm across. The flower stalk is 1-6 mm long and hairy. The fruit are round or oval. They can be 10-15 cm across. They have sharp spikes over the surface. They turn yellow when ripe. The seeds are inside an orange yellow fleshy sac. This fleshy layer is sweet and edible. The seeds are oval and 12 mm long by 7 mm wide. The seeds are edible. The subspecies rigidus has leaves which are wedge shaped at the base. They are usually smooth on the upper surface.
An upper canopy tree in undisturbed to disturbed mixed dipterocarp forests, growing on hillsides and ridges, but also on alluvial and swampy sites, often near streams; usually at elevations up to 500 metres, but occasionally to 900 metres.
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A tropical plant. In Indonesia it grows in lowland forest and up to 500 m altitude but occasionally up to 1000 m altitude. It is often near streams.
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