Medium-sized to large tree with dark brown bark. Twig, leaf bud, stipule and petiole densely persistently rufous-brown powdery pubescent; partially caducous, sparse, on leaf beneath. Twig 4-5 mm ø apically, stout, terete, becoming smooth, with 2 mm long, short, cuneate, horizontal or slightly ascending stipule scars. Bud 3-6 by 3-5 mm, globose to ovoid, obtuse. Stipule to 2 by 1.5 cm, elliptic, obtuse, caducous. Leaves 12-18 by 7-10 cm, broadly elliptic-oblong, coriaceous, bright yellow lepidote beneath; base cordate; acumen c. 5 mm broad; nerves 25-30 pairs, prominent beneath, curved, at c. 110° at base, c. 20° towards the apex, with slender indistinct scalariform tertiary nerves; petiole 1.3-2 cm long, short, stout. Panicle to 10 cm long, terminal or axillary, terete, lax, densely greenish yellow puberulent; regularly singly or doubly branched, branchlets bearing to 8 flowers; bracts and bracteoles to 2 by 1 cm, large, elliptic, obtuse, subpersistent, puberulent. Flower bud to 8 by 3 mm, lanceolate, subacute. Calyx densely yellow-brown tomentose outside, glabrous within; lobes deltoid, slightly revolute, acuminate; 3 outer lobes slightly longer, broader, obtuse; 2 inner lobes acute, narrow at base. Petals lanceolate, subacute, shortly pubescent on parts exposed in bud, puberulent elsewhere. Stamens 15, subequal; filaments slightly longer than anther, rather narrow, tapering gradually; anther oblong, tapering; appendage to connective somewhat longer than anther, reaching below style apex, stout, acute. Ovary ovoid, densely pubescent; style stoutly filiform, pubescent in the basal half, otherwise glabrous, obscurely trifurcate apically. Fruit calyx lobes shortly pubescent, densely so at base; 3 longer lobes to 10 by 2 cm, oblong, obtuse, to 1 cm broad above the slightly broadened shortly auriculate centrally thickened and saccate base; 2 shorter lobes unequal, to 4.5 by 0.5 cm, obtuse, similar at base. Nut c. 1.5 by 1 cm, ovoid, shortly densely tomentose; style remnant to 2.5 mm long.
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