Shrubs evergreen, to 60 cm tall. Branchlets purplish brown when old, densely appressed villous when young, glabrous when old. Petiole 2.5–6 mm, initially villous, glabrate; stipules linear-lanceolate, nearly as long as petiole, with 2–4 teeth per side; leaf blade obovate or oblong-obovate, 2–5 × 1–2 cm, leathery, midvein prominent, raised abaxially and impressed adaxially, veins 6–10 pairs, abaxially appressed villous, later subglabrous, adaxially lucid, glabrous, base cuneate, margin somewhat incurved, spiny-serrate, apex acute or obtuse. Compound corymbs terminal, 2.5–3 cm; rachis angulate, villous; bracts persistent, linear-lanceolate, subglabrous, with few teeth. Pedicel 2–5 mm, villous. Flowers 9–10 mm in diam. Hypanthium cupular, ca. 3 mm in diam., abaxially sparsely villous. Sepals broadly ovate, apex obtuse. Petals white, suborbicular, 3.5–4 mm in diam., apex usually emarginate. Stamens 20, ca. 1/2 length of petals. Ovary 2-loculed, densely pilose apically; styles 2, connate to middle, villous, not exceeding stamens. Fruit not seen. Fl. May, fr. Aug–Oct.

Mountain valleys; 2200--2400 m. W Sichuan.