Tree 20-45 m, 50-150 cm ø; buttresses numerous; bark dark grey, fissured, lenticellate. Branchlets initially densely greyish brown tomentose by adpressed simple and stellate hairs, later glabrous, smooth or sparsely warty lenticellate; terminal bud ovoid, c. 4 by 3 mm, scales linear to lanceolate. Leaves thick-coriaceous, rigid, (15-)18-20(-26) by (5-)7-9(-11) cm (index 2½-3), broadest at or slightly below the middle; surfaces more or less discolorous, above glabrous, dull to glossy, greyish brown, underneath with a thin cover of glaucous tomentum, hairs adpressed, minute, stellate or simple; base rounded-acute, margin recurved, top bluntly acute to sharply 1-2 cm acuminate; midrib strongly prominent on both sides; nerves (11-)12-14(-15) pairs, flat on both surfaces, parallel, at an angle of 50-70°, arcuating but not anastomosing towards the margin; reticulation fine, dense, subscalariform, distinct beneath; petiole 1-2 cm, 2-4 mm ø, glabrous, terete. Inflorescence male, androgynous or mixed, densely greyish adpressed stellate hairy; bract and bracteoles linear, 1-2½ by ½ mm. Male rachis 10-20 cm, 1½-2 mm ø; ♂ flowers solitary or in clusters of 2-3, filaments 3-5 mm, anthers 0.2-0.3 mm long, pistillode subglobose, 1-1½ mm ø. Androgynous or mixed rachis 10-25 cm, 1-2 mm ø; female flowers solitary or in clusters of 2-3, staminodes rudimentary, styles 3, terete, 2-3 mm, recurved. Ripe cupule 1-1½ cm stalked, broadly cup-shaped, 1-2 cm long, 3-4 cm ø, rim thin, covering ⅓-⅔ part of the fruit; outside obscurely tuberculate, the tubercles in concentric rows or irregularly. Ripe fruit subhemispherical, 2-3 cm long, 3-4 cm ø, densely greyish tomentose, top flat-umbonate, base truncate, scar flat, c. 1½-2 cm ø; wall woody, 3-5 mm thick, for the greater part free from the cupule.
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A tree. It grows 20-45 m tall. The trunk can be 50-150 cm across. The young branches have a grey brown coating. The leaves are simple and broad. They are 18-20 cm long by 7-9 cm wide.
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