Tree 25-45 m, 100-150 cm ø; bark dark grey, lenticellate. Branchlets initially densely fulvous to rufous-tomentose with simple or stellate hairs, angular, later glabrous, terete, densely or sparsely lenticellate; terminal buds ovoid-ellipsoid, 5-12 by 2-3 mm, scales linear-lanceolate. Stipules linear to subulate, ½-1½ by ⅓ cm, long persistent. Leaves thick-coriaceous, (11-)13-16(-23) by (3-)4-7(-9) cm (index 2.3-3.3), broadest at the middle; above glabrous, glossy, pale to dark chocolate-brown, beneath densely glaucous tomentose by adpressed stellate hairs; base rounded-acute, margin recurved, top bluntly or sharply 1-1½ cm acuminate; midrib and nerves prominent beneath, flat above; nerves (13-)15-20(-25) pairs, subparal-lel, at an angle of 50-60°, arcuating but not anastomosing towards the margin; reticulation fine, dense, subscalariform, obscure to distinct beneath; petiole ½-2 cm, 2-4 mm ø, glabrous, ad-axially flat. Inflorescence male or androgynous, densely yellowish to greyish brown stellate hairy; bracts and bracteoles narrowly ovate to linear-acute, 1½-5 by ⅔-1½ mm. Male rachis 10-20 cm, 1½-3 mm ø; ♂ flowers in clusters of 3, stamens 10-12, filaments 3-4 mm, anthers 0.35 mm long, pistillode globose, 1-1½ mm ø. Androgynous rachis 10-20 cm, 2-3 mm ø; female flowers solitary or in clusters of 2-3, staminodes rudimentary, styles 3-4, conical, 1-3 mm. Ripe cupule subsessile, saucer-shaped, ⅔-2 cm long, 3½-4½ cm ø; rim thick, entire or undulate, covering ⅓-½ part of the fruit; lamellae 6-9, entire or undulate, strongly prominent, outside densely fulvous to-mentose. Ripe fruit depressed ovoid-globose to subhemispherical, 1½-2⅔ cm long, 3-4½ cm ø, glabrous, dark chocolate-brown, top depressed or rounded-umbonate, base truncate or rounded, scar deeply concave, rarely convex, 2½-3 cm ø; wall woody, 2-4 mm thick, for the greater part free from the cupule; cotyledons flat-convex.
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