Opuntia echios var. inermis E.Y.Dawson in Cact. Succ. J. (Los Angeles) 34: 103. 1962
Opuntia echios var. inermis in Cact. Succ. J. (Los Angeles) 34: 103. 1962
is basionym for Opuntia galapageia subvar. inermis, Kakteenlex.: 317. 1966
Opuntia echios var. inermis in Cact. Succ. J. (Los Angeles) 34: 103. 1962