= Binghamia acanthura (Vaupel) Borg; Cacti, ed. 2 [Borg] 185 (1951)
= Binghamia eriotricha (Werderm. & Backeb.) Borg; Cacti, ed. 2 [Borg] 185 (1951)
= Borzicactus eriotrichus (Werderm. & Backeb.) Backeb.; Kakteen-Freund 3: 121 (1934)
= Borzicactus keller-badensis (Backeb. & Krainz) Krainz; Städtische Sukkulentensammlung Zürich, Kat. Kult. Stehenden Art. 39 (1967)
= Cereus acanthurus Vaupel; Bot. Jahrb. Syst. 50, Beibl. 111: 13 (1913)
= Cereus eriotrichus Werderm. & Backeb.; Neue Kakteen 80 (1931), et Repert. Spec. Nov. Regni Veg. 30: 61 (1932)
= Cleistocactus acanthurus (Vaupel) D.R.Hunt; Bradleya 5: 92 (1987)
= Cleistocactus acanthurus subsp. canetensis (Rauh & Backeb.) Ostolaza; CactusWorld 25: 218 (2007)
= Cleistocactus erectispinus (Rauh & Backeb.) Ostolaza; Brit. Cact. Succ. J. 21: 92 (2003)
= Cleistocactus erigens (Rauh & Backeb.) Ostolaza; CactusWorld 25(4): 219 (2007)
= Echinopsis acanthura (Vaupel) Molinari; Succulentopia 13: 18 (2015)
= Echinopsis acanthura subsp. canetensis (Rauh & Backeb.) Molinari; Succulentopia 13: 18 (2015)
= Echinopsis erectispina (Rauh & Backeb.) Molinari; Succulentopia 13: 19 (2015)
= Echinopsis erigens (Rauh & Backeb.) Molinari; Succulentopia 13: 19 (2015)
= Haageocereus convergens F.Ritter; (nomen)
= Haageocereus eremiticus F.Ritter; (nomen)
= Haageocereus imperialensis F.Ritter; (nomen)
= Haageocereus neglectus F.Ritter; (nomen)
= Haageocereus pacaranensis F.Ritter; (nomen)
= Haageocereus pacaranensis var. tenuispinus F.Ritter; (nomen)
= Haageocereus paradoxus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 21 (1956 publ. 1957)
= Loxanthocereus acanthurus (Vaupel) Backeb.; Cactaceae (Berlin) 1937(1): 24 (1937)
= Loxanthocereus acanthurus var. ferox Backeb.; Cact. Succ. J. (Los Angeles) 23: 19 (1951)
= Loxanthocereus bicolor F.Ritter; Kakteen Südamerika 4: 1455 (1981)
= Loxanthocereus canetensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 16 (1956 publ. 1957)
= Loxanthocereus cantaensis Rauh & Backeb.; Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl. 1958: 314 (1958)
= Loxanthocereus convergens F.Ritter; Kakteen Südamerika 4: 1456 (1981)
= Loxanthocereus cullmannianus Backeb.; Cactaceae [Backeberg] 6: 3674 (1962)
= Loxanthocereus erectispinus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 15 (1956 publ. 1957)
= Loxanthocereus eremiticus F.Ritter; Kakteen Südamerika 4: 1459 (1981)
= Loxanthocereus erigens Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 16 (1956 publ. 1957)
= Loxanthocereus eriotrichus (Werderm. & Backeb.) Backeb.; Blätt. Kakteenf. 4(11): 4 (1937)
= Loxanthocereus eulalianus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 14 (?1956 publ. 1957), sphalm.
= Loxanthocereus eulaliensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 14 (1957) (eulalianus), et Rauh, Beitr. Kenntn. Peruan. Kakteenveg. (Sitz. Heidelb. Akad. Wiss., Math.-Nat., Abh. 1) 317 (1958)
= Loxanthocereus gracilispinus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 16 (1956 publ. 1957)
= Loxanthocereus keller-badensis Backeb. & Krainz; Sukkulentenkunde 2: 22 (1948)
= Loxanthocereus multifloccosus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 16 (1957)
= Loxanthocereus neglectus F.Ritter; Taxon 13: 116 (1964)
= Loxanthocereus neglectus var. chimbotensis F.Ritter; Taxon 13: 116 (1964)
= Loxanthocereus pacaranensis F.Ritter; Kakteen Südamerika 4: 1468 (1981)