 Only about 30% of the subregion retains its native vegetation.Within this area, most soil types carry mallee communities consisting primarily of "Eucalyptus" species.Sands and laterites support scrub-heath of Myrtaceae and Proteaceae, and the finer-textured soils support "Eucalyptus" woodlands; the latter have a particularly high diversity of flora, of which around 25% is rare.