Tall flaky or fissure-barked tree with +-prominent buttresses. Glabrous but for petals. Twig to 2 mm ø apically, stout, terete, smooth; bud ovoid, to 2 by 1 mm. Stipule to 4 mm long, linear, fugaceous. Leaves 11-16 by 6-10 cm, broadly ovate, thickly coriaceous, base obtuse; acumen to 1.2 cm long, narrow, margin slightly revolute; nerves 8-11 pairs, dryobalanoid but relatively prominent, strongly arched, at 60°-70° with short secondaries; tertiary nerves rather distinct, densely scalariform, at 90°; midrib broad, prominently rounded beneath, slightly raised above; petiole 2-2.5 cm long, stout. Panicle to 9 cm long, terminal or axillary, to 2-axillary, terete, glabrous; regularly singly branched, branchlets to 3 cm long, bearing to 6 secund flowers; bracts and bracteoles unknown. Flower bud to 3 by 2.5 mm, ellipsoid, relatively large, distinctly pedicellate. Calyx glabrescent outside, fimbriate; 2 outer lobes ovate, acuminate, 3 inner lobes thin, suborbicular, terete. Petals to 1.3 cm long, narrowly lanceolate, acute, pubescent in parts exposed in bud, otherwise glabrous. Stamens 15, in 3 whorls, pairs alternating with single stamens; filaments slender, tapering; anthers oblong, the anterior cells slightly the larger; appendage to connective 2-3 times length of anther, prominently glandular tuberculate towards base. Ovary ovoid, glabrous at base, tapering gradually into style; apex of ovary and basal half of style densely setose; style filiform, tapering, as long as ovary; no distinct stylopodium. Fruit calyx glabrous, tapering into pedicel, lobes closely imbricate at base, hiding the nut, 2 longer to 7 by 1.5 cm, spatulate, somewhat tapering above the auriculate obtuse shallowly saccate unthickened base; 2 shorter to 2 by 1.2 cm, ovate, acute, similar at base. Nut to 18 by 9 mm, narrowly ovoid, with to 2 mm long apiculus; frequently exuding resin.
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