Tree up to 45 by 1 m ø, sometimes slightly buttressed when growing in swamps. Leaves subcoriaceous to coriaceous, elliptic-oblong or elliptic, ovate-oblong to lanceolate, rarely obovate or ovate, 5.5-18 by 2½-10 cm; base acute to cuneate, sometimes obtuse; apex acute to short acuminate, very rarely obtuse and apiculate; nerves 5-8 pairs (very rarely more); petiole 1.5-2 cm. Panicles up to 19 cm, sometimes branched almost from the very base; occasionally furfuraceous, glabrescent; peduncle very short, sometimes up to 4.5 cm. Pedicels 3-3.5 mm. Flowers white, light green or yellowish green, c. 9 mm ø. Calyx lobes almost patent or sometimes the apices curved upwards, rarely reflexed, slightly or c. 0.5 mm exceeding the margin of the disk lobes, acute, short ciliate. Petals broad-ovate, or-oblong, 2-3 by 1.75-2.5 mm, obtuse or slightly erose, sometimes slightly fimbriate at the apex, appendages lobed or dentate, usually ± 3-lobed, the central lobe often prominent and longer than the lateral ones. Disk fleshy, thick, flat sometimes concave in the bud, obscurely 5-angular or ± rounded, 2.5-3(-4) mm ø, usually minutely papillose on the upper surface. Stamens inserted between ovary and edge of disk or sometimes quite near the margin; filaments c. 1.5 mm; anthers broad-ovoid, acuminate, c. 1 by ⅔ mm, apiculate. Pistil emerging c. 1.5 mm from the disk. Ovary slightly triangular, narrowed into a cylindric style; stigma obscure. Ovules 5-8 in each cell. Fruits 6.5-11 cm long; pericarp leathery, rather thin, smooth or sometimes minutely tuberculate. Seeds with a wing c. 6.5 by 1½ cm.
Usually in dryland rain-forests in the lowland, several collections found on loam soil and limestone rocks, rarely in temporarily inundated forest or peat swamp, sometimes also found at higher altitudes, e.g. 1000 m (Central Java) and 1500 m (Mt Kinabalu).
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