Trees to 20 m tall; bark yellow-gray, smooth. Branchlets gray-brown or purplish brown, striate, densely yellow-brown tomentose when young. Buds stipitate; stipe densely yellow-brown tomentose; scales 2, sparsely pubescent. Petiole 1-2 cm, densely yellow-brown tomentose when young, becoming sparsely pubescent in furrow; leaf blade obovate-oblong or oblong, 5-14 × 3-8 cm, abaxially densely yellow-brown tomentose, with dense, resinous glands, adaxially sparsely villous, base subrounded, rarely broadly cuneate, margin irregularly minutely serrate, apex abruptly acute; lateral veins 10-13 on each side of midvein. Female inflorescence 1, oblong, 1.5-4 × 0.8-2 cm; peduncle slender, densely yellow-brown tomentose when young; bracts 3-5 mm, woody, base cuneate, apex rounded, 5-lobed. Nutlet ovate-elliptic, ca. 3 mm, with membranous wings ca. 1/2 as wide as nutlet. Fl. May-Jul, fr. Aug-Sep.
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