Cladode, stalk or pad - Indian fig opuntia, indian fig, barbary fig, cactus pear, spineless cactus, prickly pear, mission cactus, mission prickly pear, smooth mountain prickly pear, smooth prickly pear, sweet prickly pear, tuberous prickly pear or tuna cactus - Opuntia ficus-indica is a species of cactus that has long been a domesticated crop plant important in agricultural economies throughout arid and semi-arid parts of the world.