Cynanchum saccatum W. T. Wang ex Tsiang & P. T. Li; Diploglossum auriculatum (Royle ex Wight) Meisner; Endotropis auriculata (Royle ex Wight) Decaisne; Vincetoxicum auriculatum (Royle ex Wight) Kuntze.

Stems twining, puberulent along 1 side to uniformly puberulent, sometimes glabrescent. Leaves opposite; petiole 2.4-3.5(-8.5) cm, axillary stipulelike leaves sometimes present; leaf blade ovate, 4.5-11(-16) × 2.6-7(-11.5) cm, papery, puberulent, densely so on veins abaxially, base cordate with rounded sinus, apex acuminate; basal veins 5, lateral veins 2 or 3 pairs. Inflorescences racemelike, many flowered, to 23 cm; peduncle 4.5-15 cm. Pedicel 0.9-2.8 cm, puberulent. Sepals lanceolate, 2.2-5.2 × 0.8-2 mm, puberulent; basal glands 5. Corolla white, pale yellow, pink, or purple, rotate; tube short; lobes lanceolate to lanceolate-oblong, 5.5-8(-10) × 2-3 mm, coarsely pubescent to pilose inside. Corona very deeply 5-lobed, white; lobes much longer than gynostegium, elliptic, to ca. 4.5 mm, fleshy, obtuse, with narrowly triangular adaxial appendages. Stigma head conical. Follicles oblong-lanceolate, ca. 8 × 1 cm. Seeds ovate, truncate, ca. 6 × 3 mm; coma ca. 2.5 cm. Fl. Jun-Aug, fr. Aug-Dec. 2n = 22.

Bushland on mountain slopes; 2800-3600 m. Sichuan, Xizang, Yunnan [Bhutan, India, Kashmir, Nepal, Pakistan].