Ritterocactus curvispinus (F.Ritter) Doweld in Sukkulenty 2(2): 22. 1999
Ritterocactus curvispinus in Sukkulenty 2(2): 22. 1999
is new combination for Notocactus curvispinus, Kakteen Südamerika 1: 189. 1979
Ritterocactus curvispinus in Sukkulenty 2(2): 22. 1999
Taxon for this name