Synonyms: Bisnaga latispina spiralis; Bisnaga latispinus var. spiralis (homotypic); Echinocactus agglomeratus (heterotypic); Echinocactus curvicornis; Echinocactus recurvus f. spiralis (homotypic); Echinocactus recurvus var. spiralis (homotypic); Echinocactus robustus (heterotypic); Echinocactus spiralis (homotypic); Echinocactus spiralis var. stellaris; Echinocactus stellaris; Echinocactus stellatus (heterotypic); Echinofossulocactus spiralis (homotypic); Ferocactus latispinus var. spiralis; Ferocactus recurvus f. spiralis (homotypic); Melocactus besleri-affinis (homotypic)