This study presents the first collection of Oligonema flavidum (Peck) Peck in Poland. Its description, illustrations, substrate and habitat types are provided.
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.
Abstract. Symphytocarpus trechisporus (Berk. ex Torrend) Nann.-Bremek. is rare in Poland, known previously from only one locality. Sixty years after the original report, this paper presents two new localities of it in separate regions of Poland. Although S. trechisporus is recorded mostly on Sphagnum sp., the taxon does not seem to be attached to a specific substrate; rather it is associated with acidic habitats.
A checklist of 81 taxa has been prepared on the basis of 750 exsiccates of slime moulds collected in the years 1958-2009 in the area of Central Poland and preserved in the Herbarium LOD F. All these materials were reexamined according to contemporary literature. The paper summarizes the existing data concerning the occurrence of slime moulds in this area. Among the identified taxa there are four species indicated in the red list in Poland: <em>Badhamia affinis, Physarum robustum, Didymium leptotrichum</em>, and <em>Clastoderma debaryanum</em>.
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