Echinocactus setispinus var. setaceus Engelm. in Boston J. Nat. Hist. 6: 201. 1850 Echinocactus setispinus var. setaceus Engelm. in Boston J. Nat. Hist. 6: 201. 1850Taxon for this nameEchinocactus setispinus var. setaceus Engelm.
