Trees 7–30 m tall, trunk 20–100 cm in diam.; young branches glabrescent, older growth sparsely lenticellate; buds ovoid, 3–5 mm, glabrous, inner bud scales brown pubescent. Stipules 3–4 mm; petiole 1–2 cm, glabrous; leaf blade usually ovate-lanceolate or lanceolate, 6–8(–12) × 2.5–4 cm, base subrounded or narrowly so, margin undulate and indistinctly serrate, apex caudate-acuminate, sicklelike, and to 1.5 cm; lateral veins 6–8 on each side, prominent abaxially. Male inflorescences ovoid or globose, usually several arranged in raceme. Female inflorescence solitary in leaf axil. Peduncle 1–2 cm, 2–4 cm in fruit, brown-pubescent when young; bracts 4, ovate, brown-pubescent. Infructescences compressed-globose, 1.5–2 cm wide. Capsules 15–17. Fl. Apr–Jun, fr. Nov–Dec.