EN
Field investigations into slime moulds were conducted in the “Bory Tucholskie” National Park in 2014. These were preliminary inventory studies, as research into myxogastria had not been conducted previously in this area. A total of 34 taxa (32 species, 2 varieties) belonging to 16 genera were identified. Of them, Stemonitopsis amoena (Nann.-Bremek.) Nann.-Bremek. is a species new to the biota of Poland. The taxon Symphytocarpus flaccidus is on the red list of slime mould rare in Poland. Localities of two species – Cribraria languescens Rex and C. pertenuis Flatau & Schirmer, were recorded in Poland for the second time.