Branchlets red-brown, sparsely reddish glandular, glabrescent; buds not seen. Stipules ovate-lanceolate, 4–5 mm, glandular, margin ciliate, apex acute; petiole 1–1.5 cm, glandular hairy or appressed pubescent distally; leaf blade ovate or ovate-oblong, 3.5–6 × 2–3.5 cm, abaxially sparsely pubescent on veins and hairy in vein axils, adaxially glabrous, base truncate or subcordate, margin usually with 1 or 2 pairs of triangular lobes, unequally or doubly serrate, apex long acuminate. Raceme 3.5–4.5 cm, 4–6(–12)-flowered; peduncle and pedicels reddish glandular pubescent. Flowers 3–4 mm in diam.; pedicel 2–4 mm. Hypanthium urceolate-campanulate, ca. 7 mm, abaxially glabrous, adaxially pubescent. Petals pinkish, broadly elliptic, 4.5–5 mm. Stamens 20–30. Ovary cylindric, pubescent distally; ovules 7–9. Follicles not seen. Fl. Jul.

NW Yunnan.