Soehrensia formosa (Pfeiff.) Backeb., Cactaceae 3: 1678. 1959 Soehrensia formosa (Pfeiff.) Backeb., Cactaceae 3: 1678. 1959is new combination for Echinocactus formosus Pfeiff., Enum. Diagn. Cact.: 50. 1837Taxon for this nameSoehrensia formosa (Pfeiff.) Backeb., Cactaceae 3: 1678. 1959