Description from Flora of China
Lianas to 30 m. Young branchlets terete, rust colored pubescent, glabrescent when older, minutely lenticellate. Petiole 0.8-1.3 cm, pubescent when young; leaf blade elliptic to oblong, 10-15 X 4-6 cm, papery, base rounded or broadly cuneate, decurrent on petiole, apex acute, densely pubescent along veins abaxially; lateral veins 14-16 pairs. Cymes paniculate, axillary, 14-20-flowered, ca. 3.5 4 cm; peduncles paired or solitary, 2-2.5 cm, puberulent. Sepals ovate, ca. 1 mm. Corolla greenish white, tube ca. 1.5 mm; lobes falcate, oblong, ca. 5.5 mm, pilose inside, glabrous outside. Disc ringlike, apex obscurely 5-lobed. Follicles linear or nearly so, 11-12 X ca. 1 cm, shortly crisp pilose. Seeds ovate, ca. 2 cm, coma ca. 5 cm. Fl. May-Jun, fr. Jun-Aug.
* Sparse woods or brushwoods, usually in valleys. Guangxi, Hainan.