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Streams in Quebec boreal and mixed-wood forests reveal a new aquatic hyphomycete species, Dwayaangam colodena sp. nov.

     Sciences du bois et de la forêt, Faculté de foresterie et de géomatique, Université Laval, Québec, QC, G1K 7P4, Canada

B. Laitung ²

     Department of Biology, Mount Allison University, Sackville, New-Brunswick, Canada

J.A. Bérubé

     Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Québec, QC, G1V 4C7, Canada

Foam from eight streams in boreal and mixed-wood forests in Québec were sampled in early and late fall 2002 to evaluate the biodiversity of their aquatic hyphomycete communities. Two regions were studied: 53–54°N and 46–49°N. A total of 54 species were identified. Twenty taxa were found only in the northern region, and four were unique to the southern region. A new aquatic hyphomycete, Dwayaangam colodena sp. nov., was found mostly in northern streams. It is described along with its taxonomic position.

Key words: Arachnopeziza, biodiversity, freshwater fungi, Hyaloscyphaceae, ITS, Orbilia