Echinocactus fricii Arechav. in Anales Mus. Nac. Montevideo 5: 244. 1905
Echinocactus fricii in Anales Mus. Nac. Montevideo 5: 244. 1905
is basionym for Eriocactus fricii
is basionym for Notocactus fricii in Kakteen And. Sukk. 17: 195. 1966
is basionym for Notocactus sellowii f. fricii, Notokakteen: 163. 1995
is basionym for Malacocarpus fricii, Kakteen: 207. 1929
is basionym for Wigginsia fricii in Taxon 13(6): 210. 1964