Synonyms: Echinocactus grossei; Echinocactus schumannianus (homotypic); Eriocactus ampliocostatus; Eriocactus grossei (homotypic); Eriocactus grossei var. aureispinus; Eriocactus schumannianus (homotypic); Eriocephala grossei; Eriocephala schumanniana (homotypic); Malacocarpus grossei; Malacocarpus schumannianus (homotypic); Notocactus ampliocostatus; Notocactus grossei; Notocactus grossei f. aureispinus (homotypic); Notocactus grossei var. aureispinus; Notocactus schumannianus (homotypic); Notocactus schumannianus f. ampliocostatus; Notocactus schumannianus var. ampliocostatus (homotypic); Notocactus schumannianus var. grossei; Parodia ampliocostata; Parodia grossei; Parodia grossei var. aureispina