This small tree grows along roadsides close to the bank of the Colo
river west of Sydney.
http://www.box.net/shared/static/mm49y5789h.jpg
It has fruits containing nuts.
The internal structure of the fruit looks something like a mangosteen,
but the thin pulp has an astringent flavour.
Inside the the thin shell is a pure white nut. It tastes pleasantly
mealy, but not delicious. I spat it out in case it is poisonous.
What species is it?