Tree 12-30 m, 20-100 cm ø; buttresses up to 0.9 m tall, 1½ m out, 10 cm thick; bark greyish brown, densely lenticellate, occasionally scaly. Branchlets initially densely yellowish brown to fulvous stellate hairy, later subglabrous, dark greyish brown, densely or sparsely lenticellate; terminal buds ovoid-ellipsoid, 2-3 by 1-2 mm, scales narrowly ovate. Stipules narrowly ovate-acute to lanceolate, 2-3 by 1 mm. Leaves thin-coriaceous, (6-)9-10(-13) by (3-)4-5(-7) cm (index (1½-)2-2½(-3)), broadest at or below the middle; surfaces more or less discolorous, above glabrous, dull to glossy, greyish green to chocolate-brown, beneath densely set with greyish to yellowish brown (rarely rufous) adpressed stellate hairs; base rounded and abruptly acute, margin recurved, top bluntly and abruptly acute to 1-1½ cm acuminate; midrib prominent on both sides; nerves (8-)9-10(-11) pairs, prominent beneath, impressed above, subparallel, at an angle of 40-50°, arcuating and anastomosing towards the margin; reticulation dense, scalariform, distinct beneath; petiole subglabrous, ½-1 cm, 1-1½ mm ø, furrowed. Inflorescence male, androgynous or mixed, densely greyish to yellowish brown stellate hairy; bracts and bracteoles narrowly ovate to linear, 1½-5 by ½-1 mm. Male rachis 10-15 cm, 1½ mm ø, in dense paniculate clusters, subterminal; ♂ flowers in clusters of 3, filaments 2-2½ mm, anthers 0.25-0.30 mm long, pistillode subglobose, c. 1 mm ø. Androgynous or mixed rachis 5-15 cm, 1½ mm ø; female flowers solitary or in clusters of 2-3, staminodes rudimentary, styles 3, terete, 1-2½ mm, strongly recurved. Ripe cupule subsessile, saucer-shaped, 2-5 mm long, 1½-1¾ cm ø; rim thin, covering the basal part of the fruit; wall thin, inside densely fulvous-tomentose by adpressed simple hairs, outside densely greyish brown to fulvous stellate hairy; lamellae 5-6, thin, concentric, minutely denticulate. Ripe fruit depressed-ovoid, 1-1½ cm long, 1½-2 cm ø, glabrous, chocolate-brown to purplish brown, top abruptly acuminate, base rounded, scar concave, 1-1½ cm ø; wall bony, thinner than 1 mm, for the greater part free from the cupule.
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