Marshallocereus thurberi (Engelm.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 121. 1951 Marshallocereus thurberi (Engelm.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 121. 1951is new combination for Cereus thurberi Engelm. in Amer. J. Sci. Arts, ser. 2, 17: 234–235. 1854Taxon for this nameMarshallocereus thurberi (Engelm.) Backeb.