New phylogenetic insights into the lichen genus Lecanora s. lat. (Lecanoraceae, Ascomycota): resurrection of the genera Glaucomaria, Straminella and Zeora.

A new phylogenetic analysis of Lecanora s. lat. is presented based on a dataset of seven loci, including recently published mitochondrial markers. In this analysis, comprising 136 specimens and 572 sequences, several clades that can be circumscribed taxonomically are recovered as monophyletic with strong support. Lecanora divides into two large monophyletic subclades. The well-supported MPRPS clade sensu Medeiros et al. (2021) combines the genera Lecanoropsis, Myriolecis, Protoparmeliopsis, Rhizoplaca and the Lecanora polytropa- and L. varia-groups. The second unsupported clade contains the genera Bryonora, Palicella, Pulvinora and Vainionora, plus the Lecanora albella/subcarnea-, L. carpinea/rupicola-, L. intumescens-, L. subfusca- and L. symmicta-groups. Japewia, Lecidella, Miriquidica, Ramboldia and members of the Lecanora fuscescens-group are placed outside these two clades. Phylogenetic, morphological and chemical evidence supports the resurrection of three genera: Glaucomaria (for the Lecanora carpinea/rupicola-group), Straminella (for the L. varia-group), and Zeora (for the L. symmicta-group). Descriptions for each of the resurrected genera are provided, including new taxonomic combinations and lists of additional Lecanora species likely to be transferred to the proposed new genera pending further studies. Comments on the nomenclature of the new genera, as well as for Lecanoropsis and Myriolecis, are provided.