Synonyms: Cereus dasyacanthus var. minor; Echinocactus pectinifer; Echinocactus pectinifer var. laevior; Echinocactus pectiniferus; Echinocactus pectiniferus var. laevior; Echinocereus pectinatus var. baueri; Echinocereus pectinatus var. candicans; Echinocereus pectinatus var. castaneus; Echinocereus pectinatus var. chrysacanthus; Echinocereus pectinatus var. crassispinus (homotypic); Echinocereus pectinatus var. jamauvei; Echinocereus pectinatus var. laevior; Echinocereus pectinatus var. minor; Echinocereus pectinatus var. pectinatus; Echinocereus pectinatus var. reichenbachii; Echinocereus pectinatus var. robustior; Echinocereus pectinatus var. robustus; Echinocereus pectinatus var. rufispinus; Echinocereus pectinatus var. tamaulipensis (homotypic); Echinocereus pectinatus var. texensis; Echinopsis pectinata var. laevior (homotypic)