Kakadu Plum Kakadu plum an Australian native species- has the highest vitamin C content of any fruit in the world, measuring up to 7000mg per 100g of fruit- that’s around 100 times that of oranges. Its botanical name is Terminalia ferdinandiana and its other monikers include Billy Goat Plum, Green Plum, Salty Plum, Wild Plum, Murunga, Marnybi, Manmohpan, Kullari ...