Nopalea brittonii Houghton in J. Cact. Succ. Soc. Amer. 1(5): 4. 1929 Nopalea brittonii Houghton in J. Cact. Succ. Soc. Amer. 1(5): 4. 1929Taxon for this nameNopalea brittonii Houghton
