[2] The obscurely ribbed branches normally spread horizontally giving the shrub a flat-topped appearance.

Following flowering flat, thick and linear dark brown seed pods with a length of 2 to 8 cm (0.8 to 3.1 in) and a width of 2 to 6 mm (0.08 to 0.24 in).

The erect and woody pods are sticky with resin and have an odour resembling like citronella or lemon grass.

[1] The species was first formally described by the botanist Joseph Maiden in 1917 as part of the Alfred James Ewart and Olive Blanche Davies work Appendix IV: Acacias of the Northern Territory.

[3] The species name honours Gerald Freer Hill who collected the type specimen used by Maiden to prepare the description of the plant.