Vincetoxicum pingshanicum (M. G. Gilbert & P. T. Li) S. Liede

Stems 30-60 cm high, tending to twine at tip in larger plants; internodes at first pubescent, soon glabrescent. Lower leaves reduced; upper leaves large, petiole 1-2 cm; leaf blade ovate to elliptic, 7.5-15 × 3.7-8.5 cm, abaxially puberulent on veins, adaxially uniformly puberulent, base cuneate to truncate and decurrent along petiole; lateral veins 5-8 pairs. uppermost leaves much reduced. Inflorescences at upper nodes, uppermost usually longer than subtending leaves, irregularly forked to umbel-like, many flowered; peduncle 1-6.5 cm, glabrescent. Pedicel 6-9 mm, glabrous or sparsely puberulent. Sepals triangular-lanceolate, ca. 2 × 0.6-0.8 mm, glabrous except for ciliate margin. Corolla probably white, ca. 1.2 cm in diam., glabrous; lobes oblong-triangular, ca. 6 × 2 mm, apex obtuse. Corona fleshy, 5-lobed to near base, slightly shorter than anthers; lobes bluntly triangular, free from gynostegium, without internal appendages. Fl. Jun.

* Sichuan (Mei-huei-t'ouo; P'ing Shan, SW of Nan Yéli).