title: Phylogenetic relationships in the gymnopoid and marasmioid fungi (Basidiomycetes, euagarics clade).
abstract: Three distinct lineages of gymnopoid and marasmioid fungi are recognized in parsimony and Bayesian analyses of nLSU rDNA sequences. One lineage contains the genera Lentinula, Rhodocollybia, Tetrapyrgos, a resurrected and redefined Mycetinis, and two unresolved clades designated /marasmiellus and /gymnopus. /marasmiellus includes the type species of Marasmiellus and is dominated by members of Gymnopus sect. Vestipedes. /gymnopus includes the type species of Gymnopus, Micromphale and Setulipes, and members of Gymnopus sect. Levipedes. A second lineage includes the genera Marasmius s.s. and Crinipellis and represents a redefined /marasmiaceae. A third lineage includes the genera Cylindrobasidium, Flammulina, Gloiocephala, Physalacria, Strobilurus, Xerula and Marasmius sect. Epiphylli and represents /physalacriaceae. One new combination in Rhodocollybia and four new combinations in Mycetinis are proposed. A discussion of the taxonomic implications resulting from the phylogenetic reconstruction is presented.
authors.affiliation: San Francisco State University, Department of Biology, 1600 Holloway Ave., San Francisco, California 94132, USA. anwilson@clarku.edu
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Wilson
authors.forename: Dennis E
authors.initials: DE
authors.lastname: Desjardin
mesh_terms: D001487:Basidiomycota / Q000145:classification* / Q000235:genetics; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012339:RNA, Ribosomal, 28S / Q000235:genetics; D017422:Sequence Analysis, DNA; D017385:Sequence Homology
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D012339:RNA, Ribosomal, 28S