Cereus engelmannii var. pfersdorffii Heiden ex Orcutt, Rev. Cact. 1: 13. 1897 Cereus engelmannii var. pfersdorffii Heiden ex Orcutt, Rev. Cact. 1: 13. 1897Taxon for this nameCereus engelmannii var. pfersdorffii Heiden ex Orcutt, Rev. Cact. 1: 13. 1897
