Tall buttressed tree. Leaf bud and stipule persistently buff pubescent, otherwise glabrous. Twig c. 4 mm ø apically, terete, becoming prominently verrucose; stipule scars c. 3 mm long, obscure, ascending. Leaf bud to 2 by 2 mm, ovoid, acute. Stipule unknown. Leaves 19-37 by 9-15 cm, oblong, coriaceous; margin revolute; base cordate; apex shortly broadly acuminate or obtuse; nerves 12-16 pairs, prominent beneath, set obliquely at 45°-65°; tertiary nerves slender, remotely subreticulate; midrib applanate above, prominent beneath; petiole 1.8-3.8 cm long, stout. Panicle to 32 cm long, terminal or axillary, terete to somewhat compressed, glabrous, pale brown, becoming rugose, singly or doubly branched. Flower to 9 by 3.5 mm, lanceolate, large. Calyx glabrous; lobes broadly ovate, thickened; inner 2 somewhat smaller than outer 3. Petals linear, inner margin shortly setose, puberulent on parts exposed in bud. Stamens 10, in a single verticil; filaments slender, tapering; anthers broadly oblong; appendages to connective as long as anther. Ovary narrowly ovoid, tapering, densely yellow-brown pubescent; style glabrous. Fruit sessile, entirely glabrous; calyx lobes to 8 by 8 mm, ovate, acute, ± undulate and subrotate, not closely adpressed to the nut, mounted on a to 1 cm ø, to 8 mm deep, receptacle. Nut to 5 by 2.5 cm, large, oblong, shortly apiculate.