Marginatocereus marginatus var. oaxacensis Backeb., Descr. Cact. Nov. 3: 8. 1963 Marginatocereus marginatus var. oaxacensis Backeb., Descr. Cact. Nov. 3: 8. 1963is basionym for Pachycereus marginatus var. oaxacensis (Backeb.) P.V.Heath in Calyx 2: 107. 1992Taxon for this nameMarginatocereus marginatus var. oaxacensis Backeb.