Opuntia echios var. prolifera E.Y.Dawson in Cact. Succ. J. (Los Angeles) 34: 104. 1962 Opuntia echios var. prolifera E.Y.Dawson in Cact. Succ. J. (Los Angeles) 34: 104. 1962is basionym for Opuntia galapageia subvar. prolifera (E.Y.Dawson) Backeb., Kakteenlex.: 317. 1966Taxon for this nameOpuntia echios var. prolifera E.Y.Dawson