The Crystal Creek walnut is restricted to paleozoic metamorphics but with overlying basalt soils in the Mount Warning area of New South Wales, and a couple of adjacent areas in Queensland.

The Crystal Creek walnut grows in rainforest and is also found as an understorey plant in brush box ecotone areas, on moderately steep slopes no higher than 430 metres above sea level.

The Crystal Creek walnut is considered endangered, with a ROTAP rating of 2E.

Small creamy green flowers form in autumn.

The large fruit matures in summer, the size of an apple or a pear.