Description from Flora of China
Shrubs 1.5-2.5 m tall. Branchlets of previous year dark brown, those of current year dark purple, white villous or gray pubescent. Petiole 3-7 mm; leaf blade ovate, ovate-oblong, or lanceolate, 4-8 × 1.5-4 cm, papery, abaxially scabrid-bristly along veins, adaxially scabrid, veins 3-5, basifugal, base broadly cuneate, margin serrate, apex abruptly acuminate; leaf blade on flowering shoots ovate or ovate-lanceolate, base rounded, apex acute or acuminate. Inflorescences racemose, rarely paniculate, 5-22-flowered, rarely 1-flowered on weak branchlets; rachis purple, 3-11 cm; pedicels 2-6 mm. Calyx tube white, strigose or bristly; lobes dark purple or brown, ovate or ovate-lanceolate, 4.5-5 × 2.5-3 mm, apex abruptly acuminate, acumen ca. 1.5 mm, subglabrous. Corolla subdiscoid; petals white, orbicular or oblong, 1-1.3 cm × 8-11 mm. Stamens 35-38, longest ones ca. 7 mm; anthers ovoid-oblong, ca. 1.5 mm. Disc and style glabrous or sparsely setose at base. Style 5-6 × 5-7 mm. Capsule obovoid, 5-6 × 5-7 mm, with persistent calyx lobes at apex. Seeds ca. 2.5 mm, shortly tailed. Fl. Jun-Jul, fr. Aug-Oct.
* Thickets, mountain slopes; 1300-2500 m. Guizhou, Yunnan.