Mediocactus setaceus (Salm-Dyck ex DC.) Borg, Cacti, ed. 2: 213. 1951 Mediocactus setaceus (Salm-Dyck ex DC.) Borg, Cacti, ed. 2: 213. 1951is new combination for Cereus setaceus Salm-Dyck ex DC., Prodr. 3: 469. 1828Taxon for this nameMediocactus setaceus (Salm-Dyck ex DC.) Borg