Description from Flora of China
Cyathella wallichii (Wight) C. Y. Wu & D. Z. Li; Cynoctonum wallichii (Wight) Decaisne; Vincetoxicum wallichii (Wight) Kuntze.
Stems twining to 2 m, terete, internodes with 2 lines of hairs. Petiole 2.5-4 cm; leaf blade ovate-oblong, 4-9 × 2-4 cm, thin papery, adaxially pubescent, densely so along veins, abaxially glabrescent and glaucous, ciliate, base deeply cordate with rounded and incurved lobes, apex short acuminate; basal veins 5, lateral veins 3 or 4 pairs; stipulelike axillary leaves present. Inflorescences subsessile, racemelike, to 3.5 cm, 10-20-flowered; cymules 2-flowered, in regular spiral; peduncle to 2 cm, often shorter than pedicels. Pedicel to 1.5 cm. Sepals ovate, ca. 1.5 mm, pubescent; basal glands up to 20. Corolla white or yellow-white, usually reflexed to rotate, glabrous; lobes oblong-lanceolate, ca. 5 × 1.7 mm. Corona white, cupular, membranous, 3.3-4 mm high, margin with 5 rounded teeth, plicate inside between teeth, these often well developed and appendagelike. Pollinia oblong. Fl. Sep.
Most Chinese material formerly included in Cynanchum wallichii belongs to C. kintungense Tsiang.
Yunnan (Kiukiang Valley) [Bangladesh, Myanmar]