Very large, buttressed tree. Twig, petiole and leaf beneath persistently purplish rufous lepidote, fading to grey; bud and stipule persistently shortly purplish rufous puberulent. Twig c. 1 mm ø apically, slender, terete, smooth or minutely striated; stipule scars short, horizontal, obscure. Bud to 2 by 1 mm, small, ellipsoid, subacute. Stipule to 5 by 2 mm, lanceolate, subacute, fugaceous. Leaves 8-13 by 3-5 cm, lanceolate, chartaceous, undulate; base cuneate; acumen to 2 cm long, slender; nerves 11-14 pairs, slender, elevated beneath, at 40°-60°; tertiary nerves scalariform, slender, at 90° to the midrib; midrib slender, evident, applanate above, prominent beneath; petiole 14-20 mm long, slender. Panicle to 6 cm long, terminal or axillary, terete, densely dark rufous pubescent; singly branched, branchlets to 1 cm long, bearing to 3 more or less distichous flowers; bracteoles to 4 by 3 mm, elliptic, subacute, rufous pubescent, caducous. Flower bud to 5 by 4 mm, broadly ovoid. Calyx sericeous on parts exposed in bud; lobes suborbicular, subequal. Petals oblong, obtuse, densely pubescent on parts exposed in bud. Stamens 102-107, very many, sub-equal; filament compressed at base, tapering, c. 1/2 length of anther, anther narrowly oblong, c. 4 times as long as broad; appendage to connective filiform, tapering, somewhat shorter than length of anther, densely pubescent. Ovary ovoid, densely pubescent, tapering into a short broadly columnar trifid style; style pubescent except at apex. Fruit pedicel to 1 mm long, short. Calyx sparsely purplish rufous pubescent towards the base, elsewhere glabrescent; 3 longer lobes to 8 by 1.4 cm, spatulate, obtuse or subacute, tapering to 8 mm broad above the to 10 by 8 mm tuberculate saccate thickened base; 2 shorter lobes to 5 by 0.5 cm, linear, acute, similar at base. Nut to 30 by 13 mm, narrowly ovoid, acute, densely rufous pubescent.