Acacia acinacea (sp. 6) and Acacia merrallii (sp. 26) have similar flat oblique-obovate phyllodes, but are never resinous. Acacia glandulicarpa (sp. 63) has very similar phyllodes but differs in having two prominent veins and legumes covered with short brown hairs. The species has affinities with A. brachyclada W.V. Fitzg, an endemic W.Aust. species.