Tree up to 20(-30) m high and 47 cm Ø, rarely a shrub c. 2 m high. Bark greyish or light brown, smooth, or deeply fissured. Leaves subcoriaceous or coriaceous, elliptic or oblanceolate, 9-20(-28) by 2½-5(-8½) cm; glabrous on both surfaces, except the lower surface with sparse, reddish brown, short trichomes; base cuneate or attenuate; apex shortly and abruptly acuminate, or caudate; nerves (9-) 16-20 pairs, fused with a distinct marginal nerve, often with 1-4 internerval veins (usually shorter and weaker than the normal nerves), both slightly elevated beneath, distinct above; veins reticulate, rarely some perpendicular to the nerves, distinct on both surfaces, sometimes faint above; petiole 1½-2½ cm. Inflorescences 4-29 cm long, often terminal, sometimes also axillary, usually profusely branched (in ♂), puberulous, glabrescent; lateral branches up to 18 cm; bracts triangular, ½-l mm long. ♂ Flowers sessile or subsessile, white, pale greenish yellow, or yellow, once recorded pink. Calyx lobes triangular, ½-⅔ mm long. Petals ovate or ovate-oblong, 1½-2 by⅔-l mm, veins invisible. Stamens unequal in length (sometimes 2 long and 3 short), 1½-2½ mm; anthers ⅓-½ mm. Rudimentary pistil very small. ♀ Flowers not seen. Fruit ± transverse-oblong, l-1¼ by 1¼-l⅔ cm.
Primary forest, sometimes mixed dipterocarp forest, rarely in secondary forest, from the lowland up to 1000 m. Fl. Febr.-June, Sept.-Dec.; fr. June, Sept.
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