Trees rarely to 20 m tall; bud scales, branchlets, petioles, leaf blades abaxially, rachis of inflorescences, and scales of cupule tawny tomentose with short hairs. Petiole 1-2 cm; leaf blade ovate, ovate-elliptic, or lanceolate, 7-14 × 2-5 cm, thickly papery to leathery, concolorous or abaxially grayish and with waxy scale, base cuneate, margin entire or rarely apically shallowly undulate, apex acuminate to acute; midvein adaxially slightly raised and usually sparsely pubescent; secondary veins (8-)10-13 on each side of midvein; tertiary veins abaxially conspicuous, ± parallel. Male inflorescences clustered at apex of branches, rarely to 15 cm. Female inflorescences sometimes androgynous, rarely to 20 cm; cupules in clusters of 3(-5). Infructescences usually 5-8 cm. Cupule cupular, 0.8-1.4 × 1-1.8 cm, enclosing 1/2 to most of nut; bracts imbricate, triangular, appressed or a few spreading. Nut depressed globose to subglobose, slightly smaller than cupule, apex rounded, ± flat, or rarely convex, wall ca. 1 mm thick; scar covering ca. 1/3 (-1/2) of nut, convex. Fl. Aug-Oct, fr. Aug-Oct of following year.
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An evergreen tree. It grows 5-20 m high. The trunk is 10-20 cm across. Many plant parts can have light brown hairs. The leaf stalk is 1-2 cm long. The leaf blade is oval or sword shaped and 7-14 cm long by 2-5 cm wide. They are thickly papery to leathery. They tend to be the same colour on both surfaces. There are usually 10-13 side veins on each side of the main vein. The male flowers are clustered at the ends of branches. There can be up to 15 flowers. The female flowering stalk can be 20 cm long. The cups are in clusters of 3. There is a single nut.
Deciduous dipterocarp forest, mixed deciduous forest, oak-pine forest, lower montane forest, at elevations from 700-1,600 metres, but usually below 1,200 metres in Thailand.
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A tropical plant. It grows at the foot of mountains. It grows between 1,000 and 2,000 m altitude. It can grow on poor soils.
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