Micropuntia pygmaea E.F.Wiegand & Backeb., Descr. Cact. Nov.: 9. 1957 Micropuntia pygmaea E.F.Wiegand & Backeb., Descr. Cact. Nov.: 9. 1957is basionym for Opuntia pygmaea (E.F.Wiegand & Backeb.) G.D.Rowley in Natl. Cact. Succ. J. 13: 5. 1958Taxon for this nameMicropuntia pygmaea E.F.Wiegand & Backeb.