Micranthocereus dolichospermaticus (Buining & Brederoo) F.Ritter, Kakteen Südamerika 1: 108. 1979 sec. Zappi & Taylor 2020
- ≡Austrocephalocereus dolichospermaticus Buining & Brederoo in Kakteen And. Sukk. 25(4): 76–79. 1974 syn. sec. ???
- ≡Siccobaccatus dolichospermaticus (Buining & Brederoo) P.J.Braun & Esteves in Succulenta (Netherlands) 69: 6. 1990 syn. sec. ???