Neoporteria islayensis (C.F.Först.) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 56. 1966
Neoporteria islayensis in Cact. Succ. J. Gr. Brit. 28: 56. 1966
is new combination for Echinocactus islayensis in Hamburger Garten- Blumenzeitung 17: 160. 1861