Acacia petraea

It has grey-brown coloured and longitudinally stringy bark and angular yellow-brown to purplish brown branchlets that are lightly haired when young but later become glabrous.

The coriaceous and evergreen phyllodes have a linear shape and are straight to slightly curved with a length of 13.5 to 26 cm (5.3 to 10.2 in) and a width of 2 to 6 mm (0.079 to 0.236 in).

The phyllodes taper to a point and are inconspicuously multistriate with a barely discernible midnerve and eight to ten minor nerves per millimetre.

[2] The specific epithet is in reference to the rocky habitat in which the species is found.

[1] It is endemic to south western parts of Queensland on and around the Grey Range where it is often situated on lateritic scarps and ridge-tops growing in rocky soils[2] as a part of savannah, heath or open woodland communities.