A phylogenetic and taxonomic study on Ceriporiopsis s. str. (Polyporales) in China

Two new resupinate species in Polyporales, Ceriporiopsis fimbriata and C. rosea, are described from southern China on the basis of morphological and molecular examination. Ceriporiopsis fimbriata is characterized by an annual growth habit, resupinate basidiocarps with white to clay-pink pore surface when fresh, become cinnamon to yellow-brown when dry, sterile margin fimbriate, generative hyphae encrusted with pale yellow crystals, oblong-ellipsoid to subcylindrical basidiospores (4.4-5 x 1.7-2.1 mu m), and plenty of pale-yellow to pale-orange oily substances present in subiculum and trama. Ceriporiopsis rosea is distinguished by annual, resupinate basidiocarps with rose to vinaceous pores when fresh, become orange brown to reddish brown upon drying, generative hyphae bearing crystalline incrustations, broadly ellipsoid basidiospores (4-5.2 x 3.2-3.8 mu m). Phylogenetic analysis inferred from the internal transcribed spacer (ITS) regions and nuclear large subunit (nLSU) ribosomal RNA gene regions demonstrated that the two new species were grouped into the phlebia clade. A key to worldwide species of Ceriporiopsis sensu stricto in phlebia clade is provided.