Tree or shrub to 15 m tall, to 30 cm dbh. Bark pale grey to dark brown, inner bark white to yellowish, wood white or yellowish. Branches lenticellate, glabrous. Leaves opposite; petiole 5-27(-45) mm long, glabrous; blade coriaceous to papery, elliptic to obovate, 5-33 by 2.4-15.5 cm, 1.5-3.6 times as long as wide, apex apiculate to shortly acuminate, base cuneate to decurrent onto petiole, glabrous above and beneath, 6-14 pairs of secondary veins, tertiary venation mostly obscure. Inflorescence axillary, branches with many closely spaced flowers which open successively, leaving bare branches with pedicel scars in the axils of small persistent bracts, 5.5-18.5 cm long; peduncle 2.6-10.5 cm long; pedicels 2-8 mm long, glabrous. Sepals suborbicular or ovate, 1.5-3 by 1.2-3 mm, 1-1.5 times as long as wide, apex rounded to obtuse, glabrous, not ciliate. Corolla white or slightly yellowish or greenish, throat sometimes yellowish, in mature bud 21-28 mm long with wide, ovoid head which is 0.22-0.33 of bud length, apex acute to obtuse; tube 12-24 mm long, 5-10 times as long as calyx, 0.6-1.5 times as long as lobes; lobes obliquely elliptic, 16-29 by 6-13 mm, 1.8-2.6 times as long as wide, apex rounded; glabrous outside, pubescent inside. Stamens inserted in the lower half of corolla tube; anthers 3.3-4.5 by 0.9-1.5 mm. Ovaries glabrous, 1.8-3 mm long; style 0.7-3 mm long; style head 0.9-1.6 mm long. Fruit elongate and curved (often question mark-shaped) to subglobose, orange to orange-red, up to 20 by 10 cm wide but hugely variable in shape and size, with or without faint ridges, 10-20-seeded.
Coastal flood plains, periodically inundated riverine and swamp forest and occasionally on limestone, at elevations from sea-level up to 125 metres.