FIGURE 6 in Vincetoxicum pingtaoanum (Apocynaceae: Asclepiadeae), a new species from the Three Gorges District in Central China

FIGURE 6. Comparison of coronas (arrows) among Vincetoxicum pingtaoanum (A), V. emeiense (B), V. henryi (C), V. insigne (D) and V. microcentrum (E). A photographed by Yan Wang from the type collection; B provided by Si-Yuan Zeng from the type collection; C photographed by Cai-Fei Zhang from Hou-Lin Zhou in Cai-Fei Zhang 6531 (HIB); D from Tsiang (1941: fig. 12); E photographed by Cai-Fei Zhang from Miao Liao ZJLM02 (HIB).