Notocactus allosiphon Marchesi in Bol. Soc. Argent. Bot. 14: 246, f. 1972
Notocactus allosiphon in Bol. Soc. Argent. Bot. 14: 246, f. 1972
is basionym for Parodia allosiphon in Bradleya 5: 93. 1987
is basionym for Ritterocactus allosiphon in Sukkulenty 2(2): 22. 1999