Taxonomic studies of crust fungi with spines in Radulomyces , Sarcodontia , and the new genus Noblesia

Species of Radulomyces ( Radulomycetaceae , Agaricales ) with spines were studied by morphological and molecular methods. Phylogenetic analyses and morphological studies show that Radulomyces paumanokensis is a later synonym of Radulomyces copelandii and that Radulomyces licentii is a distinct taxon. Based on morphologic and molecular data, the new genus Noblesia ( Meruliaceae , Polyporales ) is proposed to accommodate Sistotrema croceum and Peniophora femsjoeensis . Sarcodontia is emended and restricted to three species with 13 taxa excluded from the genus. For many years, Sarcodontia crocea was based on an erroneous concept of Sistotrema croceum . The correct name for the taxon with striking yellow spines found on Malus and Pyrus in Europe is Sarcodontia setosa ; its North American sister species is Sarcodontia amplissima comb. nov . Hydnum sulphureum is a synonym of Sarcodontia uda , and Acia flava is a later synonym of Xylodon quercinus . Species excluded from Sarcodontia are discussed, and the new combination Hyalodon sibirica is proposed.