Multilocus phylogeny of the lichen-forming fungal genus Melanohalea (Parmeliaceae, Ascomycota): Insights on diversity, distributions, and a comparison of species tree and concatenated topologies

► We assess diversity and biogeographic patterns in the lichenized genus Melanohalea. ► The majority of classical Melanohalea species were supported by molecular data. ► We identify previously unrecognized lineages within six traditional species. ► Contrasting patterns of intercontinental and geographically restricted distributions. ► A coalescent-based multilocus species tree is presented for Melanohalea.