Medium-sized or large tree. Twigs 2 to 4 or rarely 7 mm. thick, fluted or subterete, from loosely fulvous-tomentose quickly or tardily becoming glabrate, the numerous light lenticels raised and very prominent. Buds about 5 mm. long, ovoid or elongating and acute, from loosely tomentose becoming glabrate and dull brown but the scales ciliate; the ligulate stipules rather early caducous. Leaves subevergreen or clearly evergreen, rather thin but hard and coriaceous, 10 to 20 cm. long, 3 to 7 cm. broad, lanceolate to elliptic or oblanceolate, acute or long-acuminate at apex, cuneate to rounded at base, entire or rarely coarsely few-toothed near the apex, margins minutely cartilaginous-revolute, flat or minutely crisped, upper surface glabrous and somewhat shining or the base of the midrib persistently tomentose, lower surface glabrate or rather persistently floccose especially along the midrib, opaque or somewhat shining, not bullate; veins about 12 to 16 on each side, branching and very obviously anastomosing near the margin, impressed above but slightly raised within the grooves, very prominent beneath, the reticulum rather inconspicuously raised beneath, less so above; petioles 4 to 10 or 15 mm. long, glabrate or persistently tomentose. Staminate catkins 8 to 15 cm. long, rather loosely flowered, the rachis sparsely villous, the obtuse anthers well exserted from the villous perianth. Pistillate catkins about 1 cm. long, 1-to 2-flowered. Fruit annual, solitary or paired on a peduncle 3 to 10 mm. long and 3 to 6 mm. thick with prominent lenticels; cups 2 to 3 cm. broad, deeply or shallowly cup-shaped, the margins inrolled or not, the scales narrowly ovate, obtuse, rather loosely appressed, short-fulvous-tomentose; acorns 2 to 3 cm. long, 1.5 to 2 cm. broad, round or ovoid, from loosely silky-tomentose becoming glabrate and brown, one-half or usually one-third included.
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An evergreen tree. It grows 25 m tall. The trunk can be 1 m across. It has buttresses 1 m tall. The bark is red to grey and cracked. The leaves are simple and alternate. They are sword shaped and 10-20 cm long. They are in clusters at the ends of branches. They are wedge shaped at the base. They are dark green above and more pale underneath. The flowers are small and yellow. The fruit are light brown oval acorns in a leathery cup. They are 5-7 cm long by 2-2.5 cm wide.
Forests, at elevations from 1,000-2,600 metres.
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