Stem 2--3 m tall, conspicuously striate, pubescent to subglabrous. Lateral leaflet petiolules 2--3 cm; central leaflet petiolule 5--7 cm, subglabrous; leaflet blade broadly ovate to subrounded, 7--11 × 6--8 cm, papery, sparsely pubescent or subglabrous, base rounded to slightly cordate; 5--(7)-veined from base. Inflorescences axillary, to 16 cm, pubescent; bractlets scaly. Flowers ca. 1.5 cm in diam. Sepals narrowly ovate to elliptic, 6--7 × 3--4 mm, slightly pubescent to subglabrous, margin densely villous. Petals 8--12, pale green, limb orbicular, obovate, or spatulate, ca. 8 mm, glabrous; claw linear. Stamens ca. 4 mm, glabrous; filaments basally slightly thickened, apex obtuse; anthers ventrally curved. Pistils as long as stamens, lanate. Persistent styles ca. 2 cm. Achenes ca. 5 × 1 mm. Fl. Sep, fr. Oct.

* Forests, scrub, slopes; 300--1000 m. Guangdong, Guangxi, Hainan, S Yunnan.