Grusonia imbricata (Haw.) G.D.Rowley in Tephrocactus Study Group 12(3): 44. 2006 Grusonia imbricata (Haw.) G.D.Rowley in Tephrocactus Study Group 12(3): 44. 2006is new combination for Cereus imbricatus Haw., Revis. Pl. Succ.: 70. 1821Taxon for this nameGrusonia imbricata (Haw.) G.D.Rowley