Davidson Plum 
Davidsonia pruriens
 
Davidsonia pruriens, also known as ooray, Davidson's plum, or Queensland Davidson's plum, is a medium-sized rainforest tree of northern Queensland, Australia. The leaves are large and compound. The edible dark burgundy colored fruit is produced in large clusters from the branches or the trunk, depending on the type. Contains the highest level of vitamin C of all fruits.
 
Seedling (nb: images are mature fruit trees).