Shrubs evergreen, scandent, ca. 4 m tall. Branchlets thinly pubescent or subglabrous, becoming glabrescent, with minute prickles. Leaves ternately-pinnately compound, 3-foliolate; petiole 4–10(–15) cm, petiolule of terminal leaflet 1.5–3 cm, lateral leaflets shortly petiolulate, thinly pubescent or subglabrescent, with sparse prickles; stipules caducous, linear or lanceolate, 5–7 mm, thinly pubescent; blade of leaflets ovate, broadly elliptic, or ovate-lanceolate, 8–13 × 4–7 cm, leathery, lateral veins 8–10 pairs, adaxially shiny, both surfaces glabrous or thinly pubescent only along veins, base rounded or broadly cuneate, margin sparsely shallowly sharply serrate, apex caudate. Inflorescences terminal or axillary, cymose panicles, terminal ones 15–30 cm, lateral ones shorter; rachis and pedicels thinly pubescent; bracts linear or lanceolate, 4–6 mm, puberulous. Pedicel ca. 1 cm. Calyx abaxially thinly soft hairy; tube pelviform; sepals erect in fruit, oblong, 4–6 × 2–3 mm, margin thinly gray tomentose, apex obtuse, abruptly pointed. Petals white or pink, obovate, nearly as long as sepals. Stamens usually 20–40, sometimes to more than 70, shorter than petals; filaments linear. Pistils 10 to more than 20, shorter than stamens; ovary soft hairy. Aggregate fruit subglobose, less than 1 cm in diam., glabrous or slightly soft hairy, enclosed in calyx; pyrenes coarsely rugose. Fl. Jun–Aug, fr. Oct–Dec.

Montane valleys, ravines, forests, thickets; 600--3000 m. S Yunnan [India, Indonesia, Philippines].