title: Halotthiaceae fam. nov. (Pleosporales) accommodates the new genus Phaeoseptum and several other aquatic genera.
abstract: During survey of freshwater fungi in Haute Garonne in the Pyrenees (southern France), we collected a remarkable species that is most comparable to the maritime fungus Mauritiana rhizophorae. The maritime genera Halotthia, Pontoporeia and Mauritiana as well as our newly collected species form a monophyletic clade in phylograms generated from LSU rDNA sequence analyses. This clade has undetermined familial status, and our new species is not congeneric with Halotthia, Pontoporeia or Mauritiana. A new monotypic genus, Phaeoseptum (represented by Ph. aquaticum sp. nov), therefore is introduced to accommodate the newly collected freshwater taxon. A new family, Halotthiaceae, is introduced to accommodate the four aquatic genera Halotthia, Mauritiana, Phaeoseptum and Pontoporeia.
authors.affiliation: Institute of Microbiology, Beijing Forestry University, Beijing, People's Republic of China. yinghku@gmail.com
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jacques
authors.initials: J
authors.lastname: Fournier
authors.forename: Rungtiwa
authors.initials: R
authors.lastname: Phookamsak
authors.forename: Ali H
authors.initials: AH
authors.lastname: Bahkali
authors.forename: Kevin D
authors.initials: KD
authors.lastname: Hyde
mesh_terms: D004275:DNA, Ribosomal / Q000235:genetics; D005618:Fresh Water / Q000382:microbiology*; D010802:Phylogeny; D004718:Saccharomycetales / Q000145:classification* / Q000235:genetics / Q000648:ultrastructure
chemical_list: D004275:DNA, Ribosomal