Opuntia hystricina var. nicholii (L.D.Benson) Backeb., Cactaceae 1: 610. 1958 Opuntia hystricina var. nicholii (L.D.Benson) Backeb., Cactaceae 1: 610. 1958is new combination for Opuntia nicholii L.D.Benson, Cacti Ariz., ed. 2: 48–50. 1950Taxon for this nameOpuntia hystricina var. nicholii (L.D.Benson) Backeb.