Twigs, leaf bud, stipule outside and petiole with ± dense, +-caducous, very long red-brown tufted tomentum; leaf nervation below more sparsely so or glabrous. Twigs to 1.5 cm ø apically, terete, red-brown, becoming cracked and thinly flaked. Bud to 6 by 1.5 cm, falcate, acute, glabrescent or remaining tufted as the stipule expands. Stipule to 15 by 2.5 cm, hastate, acute. Leaves 28-50 by 13-20 cm, elliptic, coriaceous; base obtuse; apex shortly abruptly acuminate; nerves 25-38 pairs, prominent beneath, the lamina persistently plicately folded between; tertiary nerves distant, scalariform; petiole 5-7 cm long, 0.5 cm ø, stout. Flowers unknown. Raceme to 12 cm long, terminal or axillary, rigid, rarely branched, red-brown long tufted tomentose. Fruit calyx tube to 5 by 5.5 cm, at first tomentose, glabrescent, at first obovoid, becoming globose, with 5 obtuse distal tubercles, constricted to c. 1.5 cm ø at neck; lobes equal, vestigial, to 8 mm long, becoming recurved, obtuse.
Fresh water swamp, usually on sandy, periodically well drained, soil; locally common in primary and secondary forest.