Grusonia ramosissima (Engelm.) G.D.Rowley in Tephrocactus Study Group 12(3): 45. 2006 Grusonia ramosissima (Engelm.) G.D.Rowley in Tephrocactus Study Group 12(3): 45. 2006is new combination for Opuntia ramosissima Engelm. in Amer. J. Sci. Arts, ser. 2, 14(42): 339. 1852Taxon for this nameGrusonia ramosissima (Engelm.) G.D.Rowley