Trees 10-20 m tall. Branches glabrous. Petiole 1-2 cm; leaf blade lanceolate, 6-13 × 1.5-4 cm, membranous, abaxially greenish and sparsely covered with reddish brown, small, lamellate, waxy scalelike trichomes when young, glabrous at maturity, adaxially deep green, base narrowly cuneate, decurrent on petiole, and symmetric or slightly oblique, margin entire, apex caudate to sometimes shortly acute; midvein adaxially somewhat impressed and villous but glabrescent; secondary veins 9-13 on each side of midvein. Female inflorescence ca. 20 cm. Cupule broadly ellipsoid, ovoid, or rarely subglobose, 2-3 cm in diam., dark brownish black when dry, outside glabrescent, wall 0.5-1 mm thick; bracts spinelike, rarely entirely covering cupule, 6-10 mm, glabrescent. Nut 1 per cupule, narrowly conical to broadly ellipsoid, 0.9-1.2 cm in diam., densely brown pilose; scar basal, 8-9 mm in diam. Fl. May-Jun, fr. Sep-Oct of following year.
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A medium or large tree. It grows 30-35 m tall. The trunk is 50-90 cm across. The leaf stalk is 1-2 cm long. The leaf blade is sword shaped and 6-13 cm long by 1.5-4 cm wide. It is deep green above and green with reddish brown scale like layer underneath. The base is narrow and wedge shaped. The tip is heart shaped or with a short tip. There are 9-13 veins each side of the main vein. The female flowering stalk is about 20 cm long. The cup is oval. It is 2-3 cm across. The fruit is a nut. There is one nut per cup. It is 1 cm high.
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