Wigginsia horstii var. juvenaliformis F.Ritter, Kakteen Südamerika 1: 200. 1979
Wigginsia horstii var. juvenaliformis, Kakteen Südamerika 1: 200. 1979
is basionym for Notocactus neohorstii var. juvenaliformis in Succulenta (Netherlands) 60: 142. 1981
is basionym for Notocactus neohorstii f. juvenaliformis in Internoto 14(2): 73. 1993
is basionym for Ritterocactus horstii f. juvenaliformis in Sukkulenty 3: 60. 2000