Lianas glabrous except for sepal and corolla margin. Nodes with distinct interpetiolar line. Petiole 2.5-4.5 cm; leaf blade elliptic, 10-14.5 × 5-7.5 cm, probably rather fleshy, abaxially very pale, adaxially dark with paler zone along midrib, base cuneate, apex acuminate; lateral veins 5 or 6 pairs, raised on both surfaces. Inflorescences umbel-like, up to 20-flowered; peduncle to 3 cm. Pedicel 1-1.7 cm. Sepals ± circular, ca. 1.5 × 1.5 mm, margin ciliolate. Corolla cam-panulate with spreading lobes, purple, buds ca. 6 mm; tube ca. 2 mm, broader than long; lobes ca. 4 × 2 mm, apex rounded. Corona lobes ca. as high as anthers, laterally compressed with almost hooked tip, basal half deeply grooved. Anther appendages oblong, rather fleshy toward base, half as high as stigma head. Stigma head ovoid, with acuminate divided beak, exserted from corolla tube. Follicles solitary, lanceolate in outline, ca. 16 × 4 cm, base narrowed into a stalk ca. 1 cm. Seeds ovate, ca. 1.7 cm × 7 mm; coma off-white, to 3 cm.

* Forests; 2100-2300 m. Yunnan (Feng Chen Lin).