Opuntia echios var. barringtonensis E.Y.Dawsonin Cact. Succ. J. (Los Angeles) 34: 104. 1962 sec. Anderson & Walkington 19711
≡Opuntia galapageia subvar. barringtonensis (E.Y.Dawson) Backeb., Kakteenlex.: 317. 1966 syn. sec. Anderson & Walkington 19711
1.Anderson, E. F. & Walkington, D.L. 1971: Cactaceae, pp. 533–546. – In: Wiggins, I. L. & Porter, D. M., Flora of the Galápagos islands. – Palo Alto, CA: Stanford University Press