Description from Flora of China
Shrubs scandent, reddish glandular puberulent on branchlets, petioles, and inflorescences. Branchlets straight, terete, 1-1.5 mm in diam., glabrescent. Petiole deeply canaliculate, 3-5 mm; leaf blade ovate or lanceolate, 1.5-3 × 1-3 cm, membranous, glabrous and glossy, sparsely red punctate and punctate-lineate, base broadly rounded and often slightly asymmetrical, margin flat, crenate-serrate with obtuse to acute teeth, apex acuminate or caudate; midrib impressed and minutely reddish puberulent adaxially; lateral veins numerous, conspicuous. Inflorescences axillary, subcorymbose, 0.5-1.9 cm, 2-5(-9)-flowered, pendulous; peduncle 0.5-2 mm; bracts linear, 0.6-1 × 0.1-0.2 mm, black punctate, margin entire, glandular ciliate. Flowers unisexual, 5-merous, staminate unknown, pistillate 1.4-1.9 mm. Pedicel 2-3 mm, densely glandular puberulent. Sepals narrowly ovate, densely black punctate, rugose basally, essentially glabrous, margin entire, glandular ciliate, apex acuminate or attenuate. Petals free, oblong or ovate, papery, glabrous outside, densely yellow glandular granulose inside, densely black punctate, margin regular, apex obtuse to acute. Stamens unknown; staminodes subequalling base of style; anthers ovate, base truncate, apex apiculate, connective black punctate dorsally. Ovary densely glandular granulose. Style slender, exserted; stigma subcapitate. Fruit purple, globose, 3-4 mm in diam., ribbed and black punctate-lineate. Fl. Nov-Feb, fr. Sep-Dec.
Mixed forests, hillsides; 800-1700 m. Guangxi, Yunnan [Vietnam]