In 1948, J. M. Black made <I>Acacia confluens</I> a synonym of <I>Acacia retinodes</I> and it was not again recognised as a distinct species until recent collections were made by staff of the State Herbarium of S.Aust. in 1968. The main features distinguishing it from <I>Acacia retinodes</I> (sp. 48) are in the legumes which have a thicker texture and are much longer and broader, and also in the shape of the seeds and funicle.