Cereus gaumeri (Britton & Rose) Standl. in Publ. Field Mus. Nat. Hist., Bot. Ser. 3: 366. 1930 Cereus gaumeri (Britton & Rose) Standl. in Publ. Field Mus. Nat. Hist., Bot. Ser. 3: 366. 1930is new combination for Cephalocereus gaumeri Britton & Rose, Cactaceae 2: 47. 1920Taxon for this nameCereus gaumeri (Britton & Rose) Standl.