Notocactus curvispinus F.Ritter, Kakteen Südamerika 1: 189. 1979
Notocactus curvispinus, Kakteen Südamerika 1: 189. 1979
is basionym for Parodia curvispina in Cactaceae Consensus Init. 4: 6. 1997
is basionym for Notocactus arnostianus f. curvispinus in Internoto 25: 108. 2004
is basionym for Ritterocactus curvispinus in Sukkulenty 2(2): 22. 1999