; Boll. Reale Orto Bot. Palermo 8: 253 (1909)
= Glandulicereus Guiggi; Cactology 3: 6 (2012)
= Griseocactus Guiggi; Cactology 3 (Suppl.): 1 (2012)
= Griseocereus (P.V.Heath) P.V.Heath; Calyx 6: 1 (1998)
= Griseocereus Guiggi; Cactology 3: 7 (2012), nom. illeg., homonym
= Hertrichocereus Backeb.; Cact. Succ. J. (Los Angeles) 22: 153 (1950)
= Isolatocereus (Backeb.) Backeb.; Jahrb. Deutsch. Kakteen-Ges. 1941: 76 (1942)
= Machaerocereus Britton & Rose; Cactaceae [Britton & Rose] 2: 114 (1920)
= Marshallocereus Backeb.; Cact. Succ. J. (Los Angeles) 22: 154 (1950)
= Neogriseocereus Guiggi; Cactology 3(Suppl. 4): 1 (2013)
= Neolemaireocereus Backeb.; Jahrb. Deutsch. Kakteen-Ges. Pt. 2, 76 (1941 publ. 1942)
= Nigellicereus (P.V.Heath) P.V.Heath; Calyx 6(1): 1 (1998)
= Rathbunia Britton & Rose; Contr. U.S. Natl. Herb. 12: 414 (1909), nom. rej.
= Ritterocereus Backeb.; Jahrb. Deutsch. Kakteen-Ges. 1941: 76 (1942)
= xRittellicereus P.V.Heath; Calyx 6: 1 (1998)