Phylogeny of the genus s.l. (Sarrameanales, Lecanoromycetes, Ascomycota), with gen. nov. and five new combinations in and .

is a genus of crustose lichens containing 13 accepted species that can be separated into two groups, based on differences in secondary chemistry that correlate with differences in characters of the sexual reproductive structures (asci and ascospores). Molecular phylogenetic analyses recovered these groups as monophyletic and support their recognition as distinct genera that differ in phenotypic characters. Species containing 2'--methylperlatolic acid are transferred to the new genus, Guzow-Krzem.