Parodia allosiphon (Marchesi) N.P.Taylor in Bradleya 5: 93. 1987 sec. Anceschi & Magli 2018
- ≡Notocactus allosiphon Marchesi in Bol. Soc. Argent. Bot. 14: 246, f. 1972 syn. sec. Anceschi & Magli 2018
- ≡Ritterocactus allosiphon (Marchesi) Doweld in Sukkulenty 2(2): 22. 1999 syn. sec. Anceschi & Magli 2018
