Taxonomy and phylogeny of Lopharia s.s., Dendrodontia, Dentocorticium and Fuscocerrena (Basidiomycota, Polyporales)

<jats:p>Eleven taxa of<jats:italic>Lopharia</jats:italic>s.s.,<jats:italic>Dendrodontia</jats:italic>,<jats:italic>Dentocorticium</jats:italic>and<jats:italic>Fuscocerrena</jats:italic>in Polyporales are included in the phylogenetic analyses of nuc rDNA ITS1-5.8S-ITS2 (ITS), D1-D2 domains of nuc 28S rDNA (28S) and RNA polymerase II second-largest subunit (<jats:italic>rpb2</jats:italic>) sequences. New species<jats:italic>Lophariaresupinata</jats:italic>and<jats:italic>L.sinensis</jats:italic>are described and illustrated.<jats:italic>Lophariaresupinata</jats:italic>, from south-eastern China, is closely related to<jats:italic>L.ayresii</jats:italic>, and<jats:italic>L.sinensis</jats:italic>, from northern China, is related to<jats:italic>L.cinerascens</jats:italic>and<jats:italic>L.mirabilis</jats:italic>.<jats:italic>Lophariamirabilis</jats:italic>specimens from temperate to tropical areas with varied hymenophore configurations all cluster together in a fully supported clade.<jats:italic>Dendrodontia</jats:italic>and<jats:italic>Fuscocerrena</jats:italic>are shown to be synonyms of<jats:italic>Dentocorticium</jats:italic>, which is phylogenetically related to<jats:italic>Lopharia</jats:italic>. Four new combinations,<jats:italic>Dentocorticiumbicolor</jats:italic>,<jats:italic>D.hyphopaxillosum</jats:italic>,<jats:italic>D.portoricense</jats:italic>and<jats:italic>D.taiwanianum</jats:italic>, are proposed. Revised generic descriptions of<jats:italic>Lopharia</jats:italic>and<jats:italic>Dentocorticium</jats:italic>are provided with keys to the six accepted species in each genus. A list of all names in<jats:italic>Lopharia</jats:italic>and<jats:italic>Dentocorticium</jats:italic>are presented with their current taxonomic status. Type specimens of<jats:italic>Dentocorticiumbrasiliense</jats:italic>and<jats:italic>D.irregulare</jats:italic>were examined and determined to be later synonyms of<jats:italic>Punctulariasubhepatica</jats:italic>and<jats:italic>Diplomitoporusdaedaleiformis</jats:italic>, respectively.</jats:p><jats:p>Corticioid fungi, dendrohyphidia, species complex, wood-inhabiting fungi</jats:p>