Description from Flora of China
Shrubs scandent, ca. 2 m. Branchlets subterete, often in whorls of 3, striped, densely gray pubescent then glabrescent. Leaves opposite or in whorls of 3, simple; petiole 0.5-3 mm, articulate at middle, puberulent; leaf blade obovate, rarely elliptic or suborbicular, 1-1.5 cm × 7-10 mm, papery or thin leathery, glabrous except for puberulent base of midrib abaxially, base cuneate, apex retuse or blunt and mucronate; primary veins 1 or 2 on each side of midrib, obscure, sometimes only basal pair obvious. Flowers solitary or 2 or 3 in axillary or terminal cymes; bracts subulate-linear, 1.5-5 mm. Flowers very fragrant. Pedicel 1-2 mm, glabrous or puberulent. Calyx campanulate, glabrous; tube 1.5-2 mm; lobes 5-6, subulate, 2-3.5 mm. Corolla white; tube 1.8-2.3 cm; lobes 5-7, oblong, 1.2-1.5 cm. Berry didymous or single, purple-black, ellipsoid, 1-1.5 cm × 8-9 mm. Fr. to May of following year.
* Thickets in valleys; 300-600 m. Yunnan (Yuanjiang Xian, Yuanyang Xian)