Fig. 5

Species tree topology from the unguided BPP analyses using a 13 species model as prior on the maximum number of species. The species tree is the maximum clade credibility topology (under all four prior settings) with median node heights calculated from the tau0.1theta0.1 analysis. Node values (in red and italic) are clade support values (mean value of the two runs). Four probability values are given for each node representing the results from the four prior variation settings in the order tau0.1theta0.1 and tau0.1theta0.01 in the upper row, and tau0.01theta0.1 and tau0.01theta0.01 in the lower row. The mycobiont spore shape, photobiont morphology, lichen thallus shape, and the approximate geographical distribution based on all 63 specimens are given with symbols. The scale bar indicates expected number of substitutions per site. N indicates the number of specimens