Synonyms: Acanthocalycium brevispinum; Acanthocalycium catamarcense; Acanthocalycium chionanthum; Acanthocalycium griseum; Acanthocalycium thionanthum brevispinum; Acanthocalycium thionanthum chionanthum; Acanthocalycium thionanthum var. aurantiacum; Acanthocalycium thionanthum var. brevispinum; Acanthocalycium thionanthum var. glaucum; Acanthocalycium thionanthum var. munitum; Echinocactus chionanthus; Echinocactus thionanthus (homotypic); Echinopsis brevispina; Echinopsis chionantha; Echinopsis thionantha (homotypic); Lobivia chionantha; Lobivia thionantha; Lobivia thionantha var. brevispina; Lobivia thionantha var. catamarcensis; Lobivia thionantha var. chionantha; Lobivia thionantha var. erythrantha; Lobivia thionantha var. munita