Lianas to 4 m. Young branches pubescent, glabrescent. Petiole 1.5-3 cm, with an adaxial group of glands; leaf blade broadly ovate to ovate-oblong, 3-8 × 1.5-6 cm, papery to subleathery, glabrous, base rounded to cordate, apex acute or acuminate; basal veins 3-5, lateral veins 2 or 3 pairs, often sunken adaxially. Inflorescences umbel-like, shorter than leaves; peduncle 1-9 mm, puberulent. Pedicel 2-8 mm, rusty pubescent. Sepals ovate, ca. 2 × 1.5 mm, pubescent. Corolla yellowish green, puberulent; tube 2.5-3 mm, ca. 4 mm in diam.; lobes ovate-triangular, revolute, ca. 3 × 2.5-3 mm. Corona lobes drying blackish, oblong, thin with distinct basal tubercle, lying flat on corolla. Follicles lanceolate, ca. 11 cm × 4 mm, glabrous. Seeds oblong, ca. 1.3 cm × 4 mm; coma 1.5-2 cm. Fl. Jun-Aug, fr. Sep-Nov.
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