Possible hybrids have been recorded. Specimens with <I>A. dodonaeifolia</I> as a probable parent have been recorded from southern Eyre Peninsula. A second possible hybrid, with <I>A. triquetra</I> as a probable parent, has also been recorded from southern Eyre Peninsula. <I>Acacia paradoxa</I> (as <I>A. armata</I>) has become established in South Africa, Ross (1975a) and is now naturalised in New Zealand, Webb et al. (1988).