Type specimens A holotype of Cynanchum thesioides (BRNM [15481/36]]) B lectotype of Vincetoxicum sibiricum var. australe (LE [LE01036690]) C lectotype of Vincetoxicum sibiricum. f. linearifolium (flowering plants, P [P03872669]), with fruiting plants (syntype, P [P00877371]) mounted on the same sheet: D holotype of Antitoxicum lanceolatum (LE [LE01036905]).

 
 
  Part of: Zhang C-F, Zhang D-J, Liao M, Hu G-W (2023) A taxonomic revision of Cynanchum thesioides (Apocynaceae) with two new synonyms. PhytoKeys 219: 11-25. https://doi.org/10.3897/phytokeys.219.93514