Description from Flora of China
Shrubs to 4 m tall. Branchlets, petioles, leaf blades abaxially, and peduncles persistently ferruginous hispid. Petiole 1-2 mm; leaf blade elliptic to oblong, 3.5-12 × 1.5-5 cm, papery, secondary veins 7-11 on each side of midvein, base obliquely shallowly cordate, apex acuminate to acute. Inflorescences superaxillary, cymose, 1-3-flowered; peduncle 1-1.5 cm. Pedicel ca. 4.5 mm, with 1 or 2 bracteoles at base. Sepals broadly ovate, puberulent. Petals reddish; outer petals broadly ovate, 3-4 mm, outside puberulent; inner petals ca. 8 mm, inside sparsely puberulent, basally long clawed, apically lozenge-shaped. Stamens 6. Carpels 3-6, glabrous; ovules 2 or 3 per carpel. Monocarp stipes 1-2 mm; monocarps globose, 0.8-1.3 cm in diam., sparsely villous. Fl. Apr-Jul, fr. Jul-Dec.
Forested slopes; 300-600 m. Hainan, S Yunnan [Cambodia, India, Laos, Malaysia, Vietnam].