The glabrous and resinous seed pods are straight to moderately curved and usually twisted.

The woody pods are 2.5 to 10 cm (0.98 to 3.94 in) in length and 10 to 20 mm (0.39 to 0.79 in) wide with thickened margins.

[2] The species was first formally described by the botanists W.M.McDonald and Bruce Maslin in 2000 as part of the work Taxonomic revision of the salwoods: Acacia aulacocarpa Cunn.

and its allies (Leguminosae: Mimosoideae: section Juliflorae) as published in the journal Australian Systematic Botany.

The species was reclassified as Racosperma disparrimum by Leslie Pedley in 2003 then returned to genus Acacia in 2006.