The species composition of macromycetes in Dusetos forest, Sartai Regional Park, was assessed. A total of 284 macromycete (19 ascomycetes and 265 basidiomycetes) species were registered. Nine species (Gyromitra sphaerospora, Lentinellus castoreus, Mycena capillaripes, M. viridinomarginata, Perenniporia subacida, Polyporus tuberaster, Postia ptychogaster, Thanatephorus terrigenus and Thelephora penicillata) have not been previously recorded in Lithuania. Wood saprotrophs, most of them associated with deciduous trees, comprise the largest part (52 %) of registered macromycetes. Dusetos forest provides a habitat for 31 red listed and woodland key habitat indicator species. Most of them are found in strictly protected part of the forest (Vosyna Strict Nature Reserve) and in sites treated as ‘woodland key habitats’. The study data highlight the importance of preserving old deciduous stands as well as maintaining high amount of dead wood in Dusetos forest.
Keywords: ascomycetes, basidiomycetes, species composition, woodland key habitats, protected territories, Lithuania.