Griseocactus pruinosus (Otto ex Pfeiff.) Guiggi in Cactology 3 (Suppl. I): 1. 2012 Griseocactus pruinosus (Otto ex Pfeiff.) Guiggi in Cactology 3 (Suppl. I): 1. 2012is new combination for Echinocactus pruinosus Otto ex Pfeiff., Enum. Diagn. Cact.: 54. 1837Taxon for this nameGriseocactus pruinosus (Otto ex Pfeiff.) Guiggi