Grusonia whipplei (Engelm. & J.M.Bigelow) G.D.Rowley in Tephrocactus Study Group 12(3): 45. 2006 Grusonia whipplei (Engelm. & J.M.Bigelow) G.D.Rowley in Tephrocactus Study Group 12(3): 45. 2006is new combination for Opuntia whipplei Engelm. & J.M.Bigelow in Proc. Amer. Acad. Arts 3: 307. 1856Taxon for this nameGrusonia whipplei (Engelm. & J.M.Bigelow) G.D.Rowley