Echinocactus pyramidalis Pfeiff., Enum. Diagn. Cact.: 86. 1837 Echinocactus pyramidalis Pfeiff., Enum. Diagn. Cact.: 86. 1837Taxon for this nameEchinocactus pyramidalis Pfeiff., Enum. Diagn. Cact.: 86. 1837