Trees 5-25 m tall. Branchlets flexuose rust-colored tomentose. Petiole 1.5-5 cm, tomentose; leaf blade obovate, ovate-oblong, obovate-oblong, or oblanceolate, 17-24 × 4-8 cm, ± leathery, abaxially flexuose rust-colored tomentose, adaxially glabrescent, base cuneate, margin subentire, serrulate or serrate on apical half, apex acute to rarely shortly acuminate; secondary veins 7-11 on each side of midvein, conspicuous; reticulate veins distinct. Inflorescences axillary or ramiflorous, 8-15 cm, flexuose rust-colored tomentose; bracts of flower pairs narrowly ovate or deltoid, 1-2 mm; floral bracts ca. 0.5 mm. Pedicels free, 1.5-2.5 mm. Perianth light brown, 1.2-1.8 cm; limb shortly clavate, ca. 2 mm in diam. Anthers 3-4 mm. Hypogynous glands ovoid, free, crowded together. Ovary rust-colored villous. Style glabrous. Fruit brown, ± globose, 2.5-3 cm in diam., apex apiculate; pericarp ca. 1 mm thick, leathery or woody, roughish. Fl. Mar-Aug, fr. Sep-Feb.

Rain forests, forests, mountains, mountain slopes, valleys; 600-1800 m. SE Xizang, Yunnan [Thailand].