Abstract
An analysis of the plant communities of the rocky outcrops of the northern Orange Free State is presented. Releves were compiled in 42 stratified random sample plots. Care was taken to sample vegetation which is representative of vegetation in pristine condition whenever possible. A TWINSPAN classification, refined by Braun-Blanquet procedures, revealed seven distinctive plant communities. A hierarchical classification, description and ecological interpretation of the plant communities are presented. One order, three alliances, six associations and two sub-associations are newly described. The restricted distribution of the plant communities, together with the species richness and high species diversity recorded within these communities, makes it imperative that the conservation of these plant communities receives high priority.
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