[1] It is often has multiple slender stems and has a woody rootstock with hairy branchlets and narrowly triangular stipules with a length of 1.5 to 4 mm (0.059 to 0.157 in).

The woody brown seed pods that form after flowering have a linear shape but can be spirally twisted when young.

The pods have a length of around 11 cm (4.3 in) and a width of 5 to 6 mm (0.20 to 0.24 in) to 11 cm long, 5–6 mm wide, coriaceous-crustaceous to subwoody, glabrous; margins thick and contain glossy dark brown seeds with an oblong to elliptic shape.

It was reclassified as Racosperma obovatum by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006.

[1] It is found as far north as Jurien Bay with a disjunct distribution south through parts of the Darling Range down to around Augusta where it is often a part of Eucalyptus marginata and Corymbia calophylla forest communities and less frequently in low open heath lands.