The structure of an <I>A. burkittii</I> community under grazing was described by Crisp &amp; Lange (1976). The site was Koonamore and the continuity of records there from 1928 enabled the age of the plants to be determined accurately. Mortality risk was very high for the first 8 years but was almost nil in the next 30 years. Vegetative reproduction from suckers does not occur. A relationship between stem girth and age was established and it was estimated that the maximum age for a plant was 250 years though the majority were of course far less than this. Estimates of the age structure of the shrubs outside the Reserve showed that very few new plants had become established since grazing began about 100 years earlier. Within the Reserve recruitment was also low apparently due to rabbit predation, but after 1974 when rabbits were again controlled, large numbers of seedlings were apparent. However the combined effect of sheep and rabbit grazing is to prevent completely the reproduction of <I>A. burkittii</I> in the area studied. The authors predict that within a century <I>A. burkittii</I> will be close to extinction where both rabbits and sheep occur together. Either, separately, will depress but probably not exterminate the species.

<P><I>A. burkittii</I> is illustrated in colour in Holliday (1976).

<P>The distribution of <I>A. burkittii</I> in Australia was mapped by Hall et al. (1964). This species is common on sandhills in the Koonamore Reserve, occasionally forming thickets. Germination seems stimulated by fire and by summer rain. About half of the seedlings recorded have survived i.e. 7/18, but others died between 1-13 years old. They consider the species relatively unpalatable to sheep, rabbits and kangaroos.

<P>Four mistletoes have been recorded on <I>A. burkittii</I> in South Australia. The most common has been Amyema preissii, wire-leaved mistletoe with many fewer <I>A. quandang</I>, grey mistletoe. Almost as common as the first is Lysiana exocarpi, harlequin mistletoe with a single collection of L. murrayi, mulga mistletoe.

<P>Lange &amp; Graham (1983) conducted experiments on the influence of rabbits on <I>Acacia regeneration</I> in the arid areas. <I>A. burkittii</I> was amongst the four species tested. Results showed that seedlings were severely pruned even with lowered post-myxomatosis rabbit population densities. Rabbit grazing pressure would significantly affect the recruitment in arid zone <I>Acacia populations</I>.