Tephrocactus ovatus (Pfeiff.) Backeb., Kaktus-ABC: 113. 1936 ["1935"] Tephrocactus ovatus (Pfeiff.) Backeb., Kaktus-ABC: 113. 1936 ["1935"]is new combination for Opuntia ovata Pfeiff., Enum. Diagn. Cact.: 144. 1837Taxon for this nameTephrocactus ovatus (Pfeiff.) Backeb.