Trees to 25 m tall; bark yellow-brown, fissured. Branchlets gray, slender, pubescent. Petiole 1-1.5 cm, densely pubescent; leaf blade oblong-lanceolate, obovate-oblong, or lanceolate, 6-9 × 3-5 cm, both surfaces sparsely pilose especially along midvein and lateral veins, base obliquely cordate or subrounded, margin coarsely and irregularly doubly serrate, apex acuminate; lateral veins 8-10 on each side of midvein. Male inflorescences 2-8 in a cluster, cylindric, 2-6 cm; bracts ovate-triangular, apex acute with a stipitate gland. Female flowers 2-4 in a cluster; bracts forming a tubular sheath, 2-5 cm, densely yellow tomentose, sparsely stipitate glandular when young, with faint veins, apex divided into triangular-lanceolate lobes usually not forked at apex. Nut enclosed by bracts, ovoid-globose, 1-1.5 cm in diam., gray-white pubescent at apex. Fl. May-Jul, fr. Jul-Aug.