Shrubs 2-5 m tall. Branchlets gray-brown, terete, pubescent when young; nodes slightly swollen. Petiole 1-2 cm; leaf blade obovate to elliptic, 3.5-7 × 2-3.5 cm, leathery, glabrous or sparsely villous when young, secondary veins 4-6 on both sides of midvein, base cuneate, margin entire, sparsely serrate, or undulate distally from middle, apex obtuse to acute. In-florescences 3-4 × 4-5 cm; peduncle 1-3 cm; pedicels 5-10 mm or longer in fruit, sparsely villous. Calyx tube turbinate, ca. 2 mm, glabrous; lobes ovate to ovate-deltoid, ca. 1 mm. Petals white, oblong-elliptic, 3-4 mm. Filaments 3-4 mm; anthers ovoid to subovoid. Ovary 5-10-loculed. Style less than 1 mm; stigma 7-10-lobed. Capsule brown, campanulate to turbinate, ca. 6 × 5 mm, 10-12-angled, apex truncate, with persistent style and stigma. Seeds ca. 3 mm; wings white. Fl. Mar-May, fr. Aug-Oct.

* Thickets on mountain slopes, rock crevices; 600-1300 m. Gansu, Guizhou, Hubei, Shaanxi, Sichuan.