Phylogeny of Proteaceae with the sister pairs analysed in bold. Detailed legend: Molecular phylogeny of the family Proteaceae including the 20 sister pair groups used for the present analyses in bold. The branch lengths shown are proportional to the estimated number of substitutions as indicated by the whole dataset of six chloroplast genes. The species richness of the clades compared is shown in parentheses, with species numbers taken from Sauquet et al. (2009; references are also available in ). The scale bar indicates number of mutations.