Tree up to 45 m high and 80 cm ø. Buttresses occasionally present, 3-6 m high, 1-2 m wide. Bark grey or rusty, smooth or scaly. Leaves sub-coriaceous, elliptic-oblong to-lanceolate, or obovate-oblong, 10-19 by 3-8½ cm, glabrous; base cuneate; apex shortly acuminate, or rounded; nerves 12-15 pairs, elevated beneath, flat above; veins reticulate, or transverse and parallel, often faint on both surfaces; petiole 1-3 cm. Panicles up to 15 cm long, pubescent; pedicels 1-3½ mm, articulated. Flower-buds ovoid-oblong or lanceolate, 5-6 by 1½-2 mm, acuminate. Calyx 5-6 mm long, circumscissile, puberulous outside. Petals white, yellow at the base, almost valvate except at the apical part, lanceolate to linear, 4-7 by ¾-l mm, puberulous outside, sparsely hairy and papillose at the lower half inside. Stamens usually c. 20 with a few filamentous staminodes, very rarely up to 28, 5½-6 nim; filaments sparsely hairy; anthers ovoid or oblong, c. ⅔ mm long. Torus subglobose, c. 1 mm ø. Ovary broadly ellipsoid, c. 1 mm ø, glabrous; stipe 1-3 mm; style terminal, 1ll4-2ll2 mm. Drupe on a centric stalk (¾-l¾ cm), subglobose, 2-4 cm ø, brown, reddish brown, or purplish black, smooth; wing-like, enlarged petals rarely present, narrowly elliptic or oblanceolate, up to 3 by ½ cm; embryo subglobose, 1¾-3 cm0; cotyledons free.
Primary and mixed dipterocarp forest, sometimes on sandy ridges, from the lowland up to 1200 m. Fl. May, July, Oct.; fr. July, Oct., Dec-Jan.
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