Lianas to 1.5 m. Stems, branches, petioles, and peduncles pubescent along 1 side. Petiole 2-4 mm; leaf blade linear to linear-lanceolate, 2.5-7 cm × ca. 5 mm, thin papery, glabrous except for puberulent midvein, acuminate at both ends; lateral veins 5-7 pairs, slightly elevated abaxially. Inflorescences shorter than leaves; cymules umbel-like, 4-6-flowered, solitary or 2 separated by rachis almost as long as peduncle; peduncle to 3 cm. Pedicel slender, 4-6 mm. Sepals lanceolate, ca. 1 × 0.5 mm, pubescent, basal glands 5. Corolla subcampanulate, glabrous outside, pubescent inside; tube ca. 2 mm; lobes oblong, up to as long as tube. Corona ringlike, rim truncate or subundulate. Anther appendages orbicular; pollinia oblong. Fl. Jun.

* Mixed woods along stream banks; ca. 2700 m. Sichuan (Baohsien), Yunnan (Likiang).