Tephrocactus flexuosus Backeb., Kaktus-ABC: 109, 410. 1936 ["1935"] Tephrocactus flexuosus Backeb., Kaktus-ABC: 109, 410. 1936 ["1935"]is basionym for Opuntia flexuosa (Backeb.) G.D.Rowley in Natl. Cact. Succ. J. 13: 5. 1958Taxon for this nameTephrocactus flexuosus Backeb.