Borzicactus fieldianus Britton & Rose, Cactaceae 4: 278. 1923 sec. Hunt 2016
- ≡Clistanthocereus fieldianus (Britton & Rose) Backeb. in Cactaceae (Berlin) 1937(1): 24. 1937 syn. sec. Hunt 2016
- ≡Cleistocactus fieldianus (Britton & Rose) D.R.Hunt in Bradleya 5: 92. 1987 syn. sec. Hunt 2016
- ≡Echinopsis fieldiana (Britton & Rose) Molinari in Succulentopi@ 13: 19. 2015 syn. sec. Hunt 2016
- =Borzicactus calviflorus F.Ritter in Taxon 13(4): 118. 1964 syn. sec. Kew WCVP (2019)
- ≡Clistanthocereus calviflorus (F.Ritter) Backeb., Kakteenlex.: 91. 1966 syn. sec. Hunt 2016