FIGURE 5 in Vincetoxicum pingtaoanum (Apocynaceae: Asclepiadeae), a new species from the Three Gorges District in Central China

FIGURE 5. Similar species Vincetoxicum henryi (A–C), V. insigne (D–F), and V. microcentrum (G–I). A, D, G, flowering plant; B, E, H, inflorescence; C, F, I, flower in top view; A, B photographed by Hou-Lin Zhou from Wushan County; C photographed by Cai-Fei Zhang from Hou-Lin Zhou in Cai-Fei Zhang 6531 (HIB); D–F photographed by Rui Tang from Daocheng County, Sichuan Province, China; G–I photographed by Cai-Fei Zhang and based on Miao Liao ZJLM02 (HIB).