Shrubs or small trees. Branchlets dark brown, striate, pubescent when young, subglabrescent. Petiole 1-2 cm, yellow pilose; leaf blade ovate-oblong, ovate, subrounded, or cordate, 5-20 X 4-10 cm, papery, abaxially densely yellow pilose, base cuneate, rounded, or cordate, apex acuminate to obtuse; veins 5-8 pairs, reticulate veins obscure. Inflorescences 3-6 X 4-8 cm, densely pubescent; bracts linear, 1-3 mm, deciduous. Calyx ca. 2 mm, slightly 2-lipped, 5-dentate, outside minutely hirsute, inside glabrous. Corolla dusty yellow, slightly 2-lipped, 5-lobed, outside puberulent, villous in throat. Stamens equal or longer than style, exserted; anthers black. Fruit black, tuberculate, glabrous. Fl. late spring to summer.

500-800 m. S Yunnan [Cambodia, India, Indonesia, Laos, Myanmar, Philippines, Vietnam]