Grusonia hystrix (Griseb.) G.D.Rowley in Tephrocactus Study Group 12(3): 44. 2006 Grusonia hystrix (Griseb.) G.D.Rowley in Tephrocactus Study Group 12(3): 44. 2006is new combination for Opuntia hystrix Griseb., Cat. Pl. Cub.: 117. 1866Taxon for this nameGrusonia hystrix (Griseb.) G.D.Rowley