Coleocephalocereus Backeb. in Blätt. Kakteenf. 1938(6): 22. 1938 sec. Zappi & Taylor 2020
- =Buiningia Buxb. in Krainz, Kakteen: 46-47, C IV. 1971 syn. sec. Zappi & Taylor 2020
- =Mariottia Guiggi, Iconogr. Cat. Cact. Cult. Hanbury: 42. 2016 syn. sec. Kew WCVP (2019)
Taxon standing
Category E. No assessment of monophyly has yet been possible, because only a few species were sampled or no phylogenetic study has been conducted so far.