Elaeocarpus arnhemicus

About

Elaeocarpus arnhemicus, the blue plum, bony quandong or Arnhem Land quandong, or simply elaeocarpus, is a species of flowering plant in the family Elaeocarpaceae and is native to northern Australia, New Guinea, Timor and certain other islands in the Indonesian Archipelago. It is a tree with narrow elliptic to lance-shaped or egg-shaped leaves with serrated edges, racemes of white or cream-coloured flowers and metallic blue fruit.

Summary from Wikipedia