Revisional work on <I>A. coriacea</I> is at present being done. It is possible that the following subspecies may be recognised. If this is followed the material in South Australia may become <I>A. coriacea</I> subsp, sericophylla.

<P>(1) Subspecies coriacea which is confined to north-western Western Australia with a small population in the Northern Territory.

<P>(2) Subspecies pendens which is confined to north-western Western Australia.

<P>(3) Subspecies sericophylla which is the most widespread and occurs across northern Australia and reaches its southern limits in northern South Australia.

<P>The seeds of <I>A. coriacea</I> are reported by Isaacs (1987) to be used in both green and dried state by the Aborigines.

<P>Cane (1989) reported that <I>A. coriacea</I> is of 'major' importance to Aborigines of the Western Desert as a source of seeds. It would be used elsewhere. It is one of the species whose seeds were eaten without grinding but were simply roasted in hot ashes and eaten directly.