In arid area from Gairdner-Torrens (northern part), North-Western and Lake Eyre regions to the N.T. border. It forms small patches mainly in tall open shrubland associated with <I>Acacia aneura</I>, <I>A. kempeana</I> and <I>Casuarina cristata</I>; can also be found along creek banks associated with <I>Eucalyptus camaldulensis</I>. Soils; associated with calcareous soils, mainly crusty alkaline and neutral red duplex, brown calcareous or neutral red earths. Rainfall 125-200 mm. Also N.T., south of the 21( latitude Qld. (Gregory South) and on Mount Stuart in the north- western corner of N.S.W.