Micranthocereus
Micranthocereus in Blätt. Kakteenf. 1938(6): 22. 1938 sec. Zappi & Taylor 20201 wfo-4000024036
- Type: Micranthocereus polyanthus
- =Austrocephalocereus in Blätt. Kakteenf. 1938(6): 22. 1938 syn. sec. Zappi & Taylor 20202 wfo-4000003717
- Type: Austrocephalocereus purpureus
- =Siccobaccatus in Succulenta (Netherlands) 69: 6. 1990 syn. sec. Hunt 20063 wfo-4000035284
- Type: Siccobaccatus dolichospermaticus