title: Psathyloma, a new genus in Hymenogastraceae described from New Zealand.
abstract: A new genus Psathyloma is described based on collections of agarics from New Zealand. We describe two new species in the genus, Ps. leucocarpum and Ps. catervatim, both of which have been known and tentatively named for a long time awaiting a formal description. Morphological traits and phylogenetic analyses reveal that Psathyloma forms a strongly supported sister clade to Hebeloma, Naucoria and Hymenogaster Morphologically Psathyloma resembles Hebeloma from which it differs mainly by producing smooth basidiospores with a germ pore. The geographical range of the genus has been demonstrated to include several regions in the southern hemisphere. A survey of published environmental sequences reveals that Psathyloma spp. were isolated from ectomycorrhizal root tips from Tasmania and Argentina, indicating an ectomycorrhizal association with southern beech.
authors.affiliation: Swedish Museum of Natural History, Department of Cryptogamic Botany, Box 50007, S-104 05 Stockholm, Sweden karl@soop.org.
authors.forename: Karl
authors.initials: K
authors.lastname: Soop
authors.affiliation: Department of Plant Anatomy, Eötvös Loránd University, Pázmány Péter sétány 1/c, H-1117, Budapest, HungaryDepartment of Biosciences, Plant Biology, P.O. Box 65, FI-00014 University of Helsinki, Finland.
authors.forename: Bálint
authors.initials: B
authors.lastname: Dima
authors.affiliation: Department of Microbiology, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary.
authors.forename: János Gergő
authors.initials: JG
authors.lastname: Szarkándi
authors.affiliation: Landcare Research, PO Box 69040, Lincoln 7640, New Zealand.
authors.forename: Jerry
authors.initials: J
authors.lastname: Cooper
authors.affiliation: Department of Microbiology, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary.
authors.forename: Tamás
authors.initials: T
authors.lastname: Papp
authors.affiliation: Department of Microbiology, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary.
authors.forename: Csaba
authors.initials: C
authors.lastname: Vágvölgyi
authors.affiliation: Fungal Evolutionary Genomics Group, Biological Research Centre of the Hungarian Academy of Sciences, Temesvári krt. 62, 6726, Szeged, Hungary.
authors.forename: László G
authors.initials: LG
authors.lastname: Nagy
mesh_terms: D001487:Basidiomycota / Q000145:classification* / Q000235:genetics* / Q000502:physiology; D004271:DNA, Fungal / Q000235:genetics; D021901:DNA, Intergenic / Q000235:genetics; D048690:Fruiting Bodies, Fungal; D009520:New Zealand; D010802:Phylogeny
chemical_list: D004271:DNA, Fungal; D021901:DNA, Intergenic
keywords: Agaricales; Nothofagaceae; mycorrhiza; systematics; taxonomy