Bioregions of South Africa, Lesotho and Swaziland (Rutherford et al. 2006). The vegetation map shows the 35 bioregions where a bioregion is defined as a composite special terrestrial unit based on similar biotic (vegetation and floristic) and physical features (landscapes and rock types) and processes at the regional scale (Rutherford et al. 2006). The legend should be referred to when comparing the areas covered by leguminochoria.