Description from Flora of China
Shrubs epiphytic, climbing, glabrous except for inflorescences. Stems robust, to 6 m, pale gray, smooth. Petiole 1-1.5 cm; leaf blade broadly ovate-cordate to ovate-oblong or elliptic, 3.5-13 × 3-5 cm, base rounded to shallowly cordate, apex obtuse or short acuminate; lateral veins ca. 4 pairs, obscure. Pseudumbels extra-axillary, globose, ca. 30-flowered, pubescent; peduncle ca. 4 cm. Pedicel 2-4 cm. Corolla white, sometimes with a pink center, rotate, 1.5-2 cm in diam.; lobes triangular, densely papillate inside, margin recurved, apex reflexed. Corona lobes stellate spreading, outer angle acute, middle ridge prominent, margin strongly reflexed and enclosing a hollow space at base, inner angle acute, incumbent on anthers. Stigma head obtuse or obscurely apiculate. Follicles linear-lanceolate, 6-10 × 0.5-1.5 cm. Seeds ca. 5 × 1 mm; coma ca. 2.5 cm. 2n = 22*.
Two varieties (one endemic to China): mountain forests, usually on trees; 200-1200 m. Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan [India, ?Japan, Malaysia, Vietnam]