Medium-sized tree. Twigs, petioles, stipules, panicles, calyx outside and ovary +-persistently densely scabrid ferruginous puberulent, leaf undersurface sparsely so or glabrescent, parts of petals exposed in bud pale brown puberulent. Twigs 3-4 mm ø, stout, much branched, ribbed, becoming pale brown, rough. Buds to 3 by 2 mm, linear-lanceolate, acute, caducous. Leaves 12-25 by 5-12 cm, typically elliptic-obovate, +-thickly coriaceous; base cuneate; margins +-prominently revolute; acumen +-abrupt, to 1.5 cm long, prominent; nerves 7-9(-15) pairs, ascending, arched, very stout and prominent beneath, evident above as also the midrib; tertiary nerves subreticulate, distinctly elevated beneath, hardly so above; petiole 1.7-3 cm long, 2-4 mm ø, stout. Panicle to 10 cm long, terminal or axillary, somewhat congested and irregularly branched. Flower bud to 12 by 3 mm, fusiform; petals pale yellow with a purplish patch at base; staminal appendages c. 1/2 length of outer anther cells, broadly deltoid; stigma short, hardly longer than ovary, stout, expanding distally into the conical style; flowers otherwise typical. Fruit subsessile or to 2 mm long pedicellate; calyx lobes equal, to 2.3 by 2.3 cm, ovate, acute, united except at the apex and fused with the to 4 by 2.5 cm ovoid apiculate protruding verrucose corky pericarp.
Lowland dipterocarp forests, on hills, valleys and stream banks, to 500 m.
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