Taxa: Thelocactus bicolor (Echinocactus bicolor, Echinocactus bicolor var. schottii, Thelocactus bicolor var. schottii), Thelocactus bicolor ssp. heterochromus (Thelocactus heterochromus), Thelocactus bicolor ssp. schwarzii, Thelocactus bicolor ssp. bolaensis, Thelocactus bicolor ssp. flavidispinus (Echin
... (show all)ocactus flavidispinus, Thelocactus bicolor var. flavidispinus), Thelocactus bicolor ssp. bicolor (Thelocactus bicolor var. bicolor)