Treelet or tree, 2-25 m high. Leaves in whorls of 2 or 3, coriaceous or papyraceous when dried; blades obovate, elliptic or narrowly so, 9.5-29.5 by 3.1-8.3 cm, ratio 1.9-3.8, base cuneate, margin entire, rarely undulate, apex acuminate or cuspidate; secondary veins usually inconspicuous, 15-32 pairs, straight to rather arcuate ascending near the margin, not reaching the margin, joining, forming a submarginal vein, much anastomosing around the submarginal vein; submarginal vein usually angled, 0.3-1 cm inside from the margin. Inflorescence 4-10.5 cm long, terminal and axillary cymes, in whorls of 2 or 3, loose; peduncle 2.5-8 cm long. Flowers 5-17(-30) on each inflorescence. Sepals ovate, apex rounded, thick except along the margin, rough outside, smooth inside. Corolla white, creamy white, yellowish white or greenish white, villose inside, rather dense, forming a belt of 1.5-2 mm wide just below the insertion of stamens; tube 11-12 mm long, tube-calyx ratio 3.4-5.2, tube-lobes ratio 0.9-1.2. Stamens inserted at 3.5-4 mm from the mouth, 0.6-0.7 of the length of the corolla tube; filaments 0.5 mm long. Pistil 4.3-7.1 mm long; ovary subglobose, apex rounded and abruptly narrowed at base of style; style 3-5.1 mm long, split at base. Fruit composed of 2 separate mericarps; mericarps ellipsoid, base cuneate or rounded, apex acute, remotely verrucose when dried; endocarps split into fibres penetrating the mesocarps; fibres hard and thick, usually forming hard thick pointed ends. Seeds 3 at either placenta.
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