 The species was first formally described by the botanist George Bentham in 1842 as part of the work "Notes on Mimoseae, with a synopsis of species" as published in the "London Journal of Botany".It was reclassified as "Racosperma implexum" by Leslie Pedley in 1987 and transferred back into its original genus in 2006.The only other synonym is "Acacia implexa" var.