Tree 10-30 m, 20-90 cm ø; buttresses 0.6-1.2 m tall, 0.9-2.4 m out, 7-10 cm thick; bark smooth to scaly, greyish brown to reddish brown. Branchlets initially densely fulvous tomentose by adpressed stellate hairs, later subglabrous, greyish to dark brown, sparsely lenticellate; terminal buds ovoid-ellipsoid, 3-5 by 1-2 mm, scales narrowly ovate to linear. Stipules narrowly ovate to linear, 5 by 1-2 mm, soon caducous. Leaves thin-coriaceous, (6-) 12-15(-18) by (2-)4-6(-7) cm (index 2-3), broadest about the middle; surfaces discolorous, above glabrous, glossy, pale to dark chocolate-brown, underneath densely yellowish to greyish brown tomentose by adpressed stellate hairs; base acute, rarely rounded, top bluntly to sharply ½-2 cm acuminate; midrib and nerves prominent beneath, slightly so above; nerves (12-)13-15(-16) pairs, dense, parallel, at an angle of 45-60°, arcuating but not anastomosing towards the margin; reticulation dense, fine, scalariform, distinct beneath; petiole ½-1½ cm, 1-1½ mm ø, adaxially flat to furrowed. Inflorescence male, androgynous or mixed, densely brownish stellate hairy; bracts and bracteoles narrowly ovate-acute, 1-2 by ½-1 mm. Male rachis 10-15 cm, 1-2 mm ø; ♂ flowers in clusters of 3 or solitary, stamens 10-12, filaments 3-5 mm, anthers 0.30-0.50 mm long, pistil-lode subglobose, 1-1½ mm ø. Androgynous or mixed rachis 7-15 cm, 1-2 mm ø; female flowers solitary, rarely in clusters of 2-3, staminodes rudimentary, styles 3-4, conical, 1-1½ mm long, connate. Ripe cupule ½-1 cm stalked, cup-to saucer-shaped, ½-1 cm long, 2-3 cm ø; rim thin, covering the basal part of the fruit; lamellae thin, 6-8, concentric, densely pale brown stellate hairy. Ripe fruit ovoid, 2-2½ cm through, densely greyish tomentose, glabrescent, pale brown, glossy, top abruptly acuminate, base rounded, scar deeply concave, 1-1½ cm ø; wall bony, 1-1½ cm thick, for the greater part free from the cupule.
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