Thelocactus pottsii (Salm-Dyck) Britton & Rose, Cactaceae 4: 12–13. 1923 Thelocactus pottsii (Salm-Dyck) Britton & Rose, Cactaceae 4: 12–13. 1923Taxon for this nameThelocactus pottsii (Salm-Dyck) Britton & Rose