Notocactus sellowii f. fricii (Arechav.) N.Gerloff, Notokakteen: 163. 1995
Notocactus sellowii f. fricii, Notokakteen: 163. 1995
is new combination for Echinocactus fricii in Anales Mus. Nac. Montevideo 5: 244. 1905
Notocactus sellowii f. fricii, Notokakteen: 163. 1995
Taxon for this name