Phylogenetic relationships of Parmelia discordans, P. omphalodes and P. pinnatifida, based on Bayesian analysis of the ITS rDNA dataset. Posterior probabilities and maximum likelihood bootstrap values are shown near the internal branches. Newly generated sequences are described with herbarium numbers following the species names. GenBank Accession numbers of sequences downloaded from GenBank follow the species names. Clades with Parmelia discordans, P. omphalodes and P. pinnatifida are highlighted.