This is Linum marginale seeds or fruit, it has a lovely blue flower but I am more drawn to the dried seed pods left on the stalks after flowering. 

The seeds are classed as bush tucker and apparently have a similar flavour to sesame seeds and can be consumed in the same manner. This is growing in a fabulous native garden in Wollongong, check out Emma’s blog for more information on Illawarra natives. http://nativeillawarra.blogspot.com.au