The genus Acacia Mill. (sens. lat.) is now regarded as comprising five genera, one of which is Senegalia Raf. This genus is represented in Australia by just four species, two native and two introduced. The following new combinations are made in order to facilitate the completion of a revised edition of the Flora of Australia vol. 11: Senegalia chundra (Roxb. ex Rottler) Maslin, Senegalia pennata (L.) Maslin and Senegalia pennata subsp. kerrii (I.C. Nielsen) Maslin.