Tephrocactus wilkeanus Backeb., Kaktus-ABC: 108, 410. 1936 ["1935"] Tephrocactus wilkeanus Backeb., Kaktus-ABC: 108, 410. 1936 ["1935"]is basionym for Opuntia wilkeana (Backeb.) G.D.Rowley in Natl. Cact. Succ. J. 13: 6. 1958Taxon for this nameTephrocactus wilkeanus Backeb.