Description from Flora of China
Shrubs ca. 2.5 m tall. Branchlets red-brown, 8-14 cm, 4-8-leaved, glabrous. Petiole purplish, 2-5 mm; leaf blade abaxially green or grayish green and glaucous, ovate- or elliptic-lanceolate, 3-9 × 0.7-2.5 cm, subpapery, abaxially glabrous or 3- or 4-rayed stellate hairy, adaxially 3-5-rayed stellate hairy, base rounded to broadly cuneate, margin serrulate, apex acuminate. Cymes 3-6 cm in diam., 5-15-flowered, glabrous; pedicels 0.5-1.5 cm. Calyx tube ca. 2.5 mm in diam.; lobes broadly ovate, shorter than tube. Petals imbricate, white or pinkish apically, ovate, 6-10 × 5-6 mm. Outer stamens 6-7 mm; filaments 2-dentate at apex, teeth ± level with anthers; anthers borne between filament teeth, stalked. Inner stamens 5-6 mm; filaments obtuse or 2-lobed at apex; anthers borne near middle of filaments abaxially. Styles 3, 6-7 mm. Capsule hemispheric, 3-4 mm in diam. Fl. Mar-Jul, fr. Aug-Oct. 2n = 26*.
* Dense forests, thickets, mountain slopes; 1000-2500 m. Gansu, W Hubei, S Shaanxi, Sichuan.