Phylogenetic and Taxonomic Analyses of Three New Wood-Inhabiting Fungi of (Basidiomycota) in a Forest Ecological System.

Wood-inhabiting fungi are a cosmopolitan group and show a rich diversity, growing in the vegetation of boreal, temperate, subtropical, and tropical regions. , , and spp. nov. were found in the Yunnan-Guizhou Plateau, China, suggested here to be new fungal species in light of their morphology and phylogeny. is characterized by a grandinioid hymenophore and ellipsoid basidiospores; has a membranous hymenophore, a smooth hymenial surface with a speckled distribution, and absent cystidia; has a grandinioid hymenophore with a cream to slightly buff hymenial surface and cystidia of two types. Sequences of the ITS and nLSU rRNA markers of the studied samples were generated, and phylogenetic analyses were performed using the maximum likelihood, maximum parsimony, and Bayesian inference methods. After a series of phylogenetic studies, the ITS+nLSU analysis of the order Hymenochaetales indicated that, at the generic level, six genera (i.e., , , , , , and ) should be accepted to accommodate the members of sensu lato. According to a further analysis of the ITS dataset, was retrieved as a sister to ; formed a monophyletic lineage and then grouped with , , , and ; and was a sister to .