Thelocactus hexaedrophorus subsp. kvetae Chvastek & Halda in Acta Mus. Richnov., Sect. Nat., 7: 39. 2000 Thelocactus hexaedrophorus subsp. kvetae Chvastek & Halda in Acta Mus. Richnov., Sect. Nat., 7: 39. 2000Taxon for this nameThelocactus hexaedrophorus subsp. kvetae Chvastek & Halda