Oreocereus fossulatus (Labour.) Backeb. in Kakteen-Freund 3: 14. 1934 sec. Kiesling & al. 2014
- ≡Pilocereus fossulatus Labour. in Rev. Hort. (Paris) sér. 4, 4: 24. 1855 syn. sec. Kiesling & al. 2014
- ≡Borzicactus fossulatus (Labour.) Kimnach in Cact. Succ. J. (Los Angeles) 32: 59. 1960 syn. sec. Kiesling & al. 2014
- ≡Cleistocactus fossulatus Mottram in Chileans 13(43): 30. 1985 syn. sec. Kiesling & al. 2014
- =Oreocereus pseudofossulatus D.R.Hunt in Bradleya 9: 89. 1991 syn. sec. Kiesling & al. 2014