Tree 10-35 m, 20-80 cm ø; buttresses low, up to 3 m out, stilt-roots occasionally present; bark grey-brown, smooth to fissured, lenticellate. Branchlets initially densely yellowish brown to rufous-tomentose by adpressed stellate hairs, later glabrous, greyish to blackish brown, sparsely lenticellate; terminal buds ovoid-ellipsoid, 1½-3 by 1-1½ mm, scales ovate to linear-acute. Stipules linear-acute, 2½-3½ by ⅔-1 mm. Leaves thin-coriaceous, (7-)9-12(-15) by (2½-)3-5(-6) cm (index (2-)2½-3(-4)), broadest at or rarely above the middle; surfaces discolorous, above glabrous, dull to glossy, usually dark chocolate-brown, underneath densely greyish to glaucous tomentose by adpressed stellate hairs; base attenuate-acute, top bluntly or sharply ½-2 cm acuminate; midrib prominent on both sides; nerves (9-)10-12(-13) pairs, thin but prominent beneath, parallel, at an angle of 45-60°, arcuating and anastomosing towards the margin; reticulation fine, subscalariform, obscure; petiole glabrous, ½-1½ cm, 1-3 mm ø, furrowed. Inflorescence male or androgynous, densely greyish to yellowish brown stellate hairy; bracts and bracteoles ovate, 1-1½ by ⅓-½ mm. Male rachis 10-20 cm, 1-1½ mm ø, simple and axillary or much-branched and subter-minal; ♂ flowers solitary or in clusters of 2-3, stamens 10-12, filaments 2-3 mm, anthers 0.35 mm, pistillode globose, c. 1 mm ø. Androgynous rachis 10-15 cm, 1-1½ mm ø; female flowers solitary, staminodes rudimentary, styles 3, conical, c. 1 mm. Ripe cupule ½ cm stalked, saucer-shaped, ⅓-½ cm long, 1-2 cm ø; rim thin, covering the basal part of the fruit; wall thin, inside densely greyish brown tomentose by adpressed simple hairs, outside densely greyish adpressed stellate hairy; lamellae 5-7, thin, concentric, minutely denticulate. Ripe fruit ovoid-conical, 1-1½ cm through, usually slightly longer than wide, glabrous, dark purplish brown, top gradually rounded-acute, base rotundate, scar deeply concave, c. 1-1⅓ cm ø; wall bony, thinner than 1 mm, for the greater part free from the cupule; cotyledons flat-convex.
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