Tree to 40 m tall, the young branches sparsely puberulous, soon glabrous. Stipules triangular, c. 1 mm long, caducous. Leaves thinly coriaceous, narrowly oblong, 5-9.5 by 1.8-3.7 cm, cuspidate acuminate at apex, the tip 7-15 mm long, cuneate at base; midrib plane above, prominulous beneath; primary veins 8-12 pairs, inconspicuous, slightly prominulous beneath; petioles 3-7 mm long, terete, glabrescent. Inflorescence of axillary and terminal racemes, 2-9 cm long, the rachis sparsely villous. Flowers hermaphrodite, c. 1.5 mm long; pedicels 1.5-3 mm, sparsely villous. Receptacle broadly cupuliform-flattened, sparsely villous on exterior, tomentose within. Calyx lobes acute, with hirsute margins. Petals 5, with hirsute margins. Stamens 5, all fertile, opposite the petals in a complete circle. Ovary inserted at base of receptacle, glabrous on exterior except at base, unilocular. Style pilose at base, glabrous above, the stigma with two large apical lobes, the third reduced or missing. Fruit ellipsoid, c. 1.6 cm long; epicarp smooth, glabrous; mesocarp thin, hard; endocarp thin, hard, bony, glabrous within, opening by two lateral plates.
Usually in well-drained hill forest up to 700 m altitude, but also reported from secondary forest, swampy (Campnosperma) forest and even beach forest.
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