Trees to 30 m tall. Branches of last-year growth yellowish gray, sparsely lenticellate; lenticels slightly raised. Petiole 1.5-2.5 cm, base thickened; leaf blade oblong to obovate-oblong, 10-38 × 5-13 cm, ± rigidly papery, abaxially glaucous when dry and with waxy scalelike trichomes, base cuneate and ± decurrent on petiole, margin entire, apex acuminate; secondary veins 9-12 on each side of midvein, abruptly curving apically near margin but not fusing; tertiary veins reticulate, conspicuous on both surfaces. Male inflorescences paniculate; rachis tawny pubescent. Female inflorescence with cupules in clusters of 5-7 scattered on rachis. Infructescences ca. 15 cm; rachis base 6-10 mm thick. Cupule obovoid, subglobose, or irregularly shaped, to 5 × 8 cm, completely enclosing nut, wall 0.5-1.5 cm thick and corky; bracts reduced to spiral or concentric lines. Nut subglobose, 2.5-3.5 × 2-3 cm, wall 2-3 mm thick; scar covering more than 1/2 of nut, convex. Cotyledons plicate. Fl. Apr-May, fr. Sep-Nov of following year.
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