Pachycereus gaumeri Britton & Rose, Cactaceae 2: 71. 1920 Pachycereus gaumeri Britton & Rose, Cactaceae 2: 71. 1920is basionym for Anisocereus gaumeri (Britton & Rose) Backeb., Cactaceae 6: 2155. 1962is basionym for Pterocereus gaumeri (Britton & Rose) T.MacDoug. & Miranda in Ceiba iv: 140. 1954Taxon for this namePachycereus gaumeri Britton & Rose