The phyllodes have a main longitudinal nerve and form a needle-sharp point with a length of 1 to 3 mm (0.039 to 0.118 in) at the tip.

[2] The species was first formally described by the botanist Bruce Maslin in 1982 as part of the work Studies in the genus Acacia (Leguminosae: Mimosoideae).

Acacia species of the Hamersley Range area, Western Australia as published in the journal Nuytsia.

[1] It is native to an area in the Gascoyne, Pilbara and Goldfields regions of Western Australia where it is often situated on rocky hillslopes growing in gravelly and stony skeletal soils often over or around ironstone.

[2] It has a scattered distribution with the bulk of the population in the Pilbara from around Duck Creek Station in the north west to Balfour Downs Station to the north east it is also found in the Barlee Range and upper catchments of the Gascoyne, Ashburton and Murchison Rivers and down to around Mount Fraser in the south.