title: Toward a stable classification of genera within the Entolomataceae: a phylogenetic re-evaluation of the Rhodocybe-Clitopilus clade.
abstract: Despite the recent molecular systematic analyses of the Entolomataceae (Agaricales, Basidiomycota), a robust classification of genera supported by morphological and phylogenetic evidence remains unresolved for this cosmopolitan family of pink-spored fungi. Here, a phylogenetic analysis for one of the two major clades (Rhodocybe-Clitopilus) was conducted using three nuclear protein-coding gene regions, the mitochondrial ATP synthase subunit 6 (atp6), the nuclear RNA polymerase subunit II (rpb2) and the nuclear translation elongation factor subunit 1-α (tef1). Five monophyletic groups are resolved with strong statistical support and a set of morphological features for delineation of genera is presented. In the revised classification proposed here, Clitopilus is retained, Rhodocybe is emended, two genera previously accepted as synonyms of Rhodocybe (Clitopilopsis and Rhodophana) are resurrected and Clitocella is described as new.
authors.affiliation: Middle Tennessee State University, Ecology and Evolutionary Biology Group, Biology Department, PO Box 60, Murfreesboro, Tennessee 37132.
authors.forename: Kerri L
authors.initials: KL
authors.lastname: Kluting
authors.affiliation: Department of Biological Sciences, PO Box 2000, State University of New York, College at Cortland, Cortland, New York 13045.
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Baroni
authors.affiliation: Middle Tennessee State University, Ecology and Evolutionary Biology Group, Biology Department, PO Box 60, Murfreesboro, Tennessee 37132 sarah.bergemann@mtsu.edu.
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Bergemann
mesh_terms: D000363:Agaricales / Q000145:classification* / Q000166:cytology / Q000235:genetics / Q000302:isolation & purification; D001483:Base Sequence; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D048690:Fruiting Bodies, Fungal; D005656:Fungal Proteins / Q000235:genetics; D025261:Mitochondrial Proton-Translocating ATPases / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012319:RNA Polymerase II / Q000235:genetics; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D013172:Spores, Fungal
chemical_list: D004271:DNA, Fungal; D005656:Fungal Proteins; D012319:RNA Polymerase II; C412204:ATP synthase subunit 6; D025261:Mitochondrial Proton-Translocating ATPases
keywords: Agaricales; Basidiomycota; Clitocella; Clitopilopsis; Clitopilus; Rhodocybe; Rhodophana; systematics; taxonomy