Thelocactus tulensis (Poselg.) Britton & Rose, Cactaceae 4: 11, f. 10. 1923
Thelocactus tulensis, Cactaceae 4: 11, f. 10. 1923
is new combination for Echinocactus tulensis in Allg. Gartenzeitung 21(12): 125–126. 1853
Thelocactus tulensis, Cactaceae 4: 11, f. 10. 1923