Cylindropuntia alcahes subsp. gigantensis (Rebman) U.Guzmán in Cactaceae Syst. Init. 16: 16. 2003 Cylindropuntia alcahes subsp. gigantensis (Rebman) U.Guzmán in Cactaceae Syst. Init. 16: 16. 2003Taxon for this nameCylindropuntia alcahes subsp. gigantensis (Rebman) U.Guzmán