Frailea alexandri Metzing, Bradleya 24: 124–121, 123, 125, f. 8–10, 12, 13a–c. 2006
Frailea alexandri, Bradleya 24: 124–121, 123, 125, f. 8–10, 12, 13a–c. 2006
Taxon for this nameFrailea alexandri, Bradleya 24: 124–121, 123, 125, f. 8–10, 12, 13a–c. 2006