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