Thelocactus conothelos (Regel & Klein bis) F.M.Knuth in Backeberg & Knuth, Kaktus-ABC: 358. 1936 ["1935"]
Thelocactus conothelos in Backeberg & Knuth, Kaktus-ABC: 358. 1936 ["1935"]
is new combination for Echinocactus conothelos, Index Seminum [St. Petersburg (Petropolitanus)] 1860: 48. 1860
Thelocactus conothelos in Backeberg & Knuth, Kaktus-ABC: 358. 1936 ["1935"]