Bayesian 50 % majority rule consensus tree based on a concatenated alignment of ITS and mtSSU sequences of 42 accessions of 17 Psora species (see Table 1). Parsimony jackknife support values above 90% are shown below branches and Bayesian posterior probabilities above 0.9 above. The curly branch leading to P. testacea has been shortened to reduce the size of a broad figure.