Opuntia orbiculata Salm-Dyck ex Pfeiff. Opuntia orbiculata Salm-Dyck ex Pfeiff., Enum. Diagn. Cact.: 156. 1837 sec. Guzmán & al. 2003=Opuntia senilis Roezl, Belgique Hort. 24: 39. 1874 syn. sec. ???