Large, smooth or fissure-barked buttressed tree. Young twig, bud and petiole waxy glaucescent. Twig to 1 mm ø apically, slender, terete, smooth. Bud to 2 by 1 mm, ovoid. Stipule to 2.5 mm long, linear, fugaceous. Leaves 5-8 by 2.2-4.5 cm, ovate, thinly coriaceous; base cuneate, frequently subequal; acumen to 1.5 cm long, caudate; margin not revolute; nerves c. 8 pairs, indistinct, dryobalanoid; main secondaries almost reaching margin; tertiary nerves reticulate, indistinct; midrib slender, slightly raised on both surfaces; petiole 1.2-1.7 cm long, slender. Panicle to 7 cm long, axillary (rarely terminal), terete, puberulent or glabrous; singly branched, branchlets bearing to 5 secund cream flowers; bracteoles small, linear, fugaceous. Flower bud small, ellipsoid. Calyx shortly pubescent outside, glabrous within; 2 outer lobes ovate-acuminate, 3 inner lobes ovate to suborbicular, obtuse or subacute. Petals linear, densely pubescent on parts exposed in bud. Stamens 15; filaments slender, tapering; anthers broadly oblong; appendage to connective about twice as long as anther, slender. Ovary and stylopodium hour-glass-shaped, puberulent towards the apex, tapering into the short glabrous style. Fruit calyx glabrous; 2 longer lobes to 3.5 by 1 cm, obtuse, to 2 mm broad above to 4 by 3.5 mm ovate saccate slightly thickened base, twisted; 3 shorter lobes to 7 mm long, acute, similar at base. Nut to 9 by 5 mm, broadly ovoid, glabrous; style remnant to 1 mm long.
An upper canopy tree, widespread in forests on coastal hills and on deep soils on inland ridges (especially in Malaya), usually at low elevations but occasionally to 1,200 metres.
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Widespread, on coastal hills and on deep soils on inland ridges (especially in Malaya), occasionally to 1200 m.
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