Lianas to 5 m. Branchlets tawny brown, densely pubescent at nodes. Petiole 0.8-1.2 cm; leaf blade obovate to oblanceolate, 4-5.5 × 1-2.2 cm, glabrescent or abaxially puberulent, base cuneate-auriculate, apex apiculate; lateral veins 3 (or 4) pairs, at ± 90º to midvein. Cymes shorter than leaves, rusty tomentose. Flower buds acuminate. Pedicel 2-3 mm. Sepals lanceolate, 2.5-3 × ca. 1 mm. Corolla puberulent outside; tube ca. 3 mm; lobes oblong, ca. 6 × 3 mm. Corona lobes ovate, apex acute. Anther appendages acute. Stigma head long beaked. Follicles linear-lanceolate in outline, ca. 9 cm × 5 mm, rusty tomentose to glabrous. Seeds ovate-oblong, ca. 10 × 5 mm, apex short beaked; coma ca. 2 cm. Fl. Apr-Jun, fr. Aug-Nov.

* Forests; ca. 800 m. Guangxi, Yunnan.