Tephrocactus articulatus var. ovatus (Pfeiff.) Backeb. in Cactus (Paris) 38: 249. 1953 Tephrocactus articulatus var. ovatus (Pfeiff.) Backeb. in Cactus (Paris) 38: 249. 1953is new combination for Opuntia ovata Pfeiff., Enum. Diagn. Cact.: 144. 1837Taxon for this nameTephrocactus articulatus var. ovatus (Pfeiff.) Backeb.