Flora
Almost 1000 species of vascular plants (including about 60 protected species), over 200 species of bryophyte and liverworts, as well as 300 species of lichens were found in the Park. The flora is characterised by a presence of many species associated with northern climatic zone. Forests, which cover most of the Park area represent almost all types of forest communities found in the north-east Poland. Typical communities, occupying large areas are mixed forests with either reed grass and pine or reed grass and spruce, as well as mixed forests with hazel and spruce. Apart from 19 forest associations, there are about 90 other plant associations, many of which are rare in the country. The most natural are alder carrs and marshy coniferous forests. Peatbogs communities with shrubby birch, rare species of liverworts and common and great sundews, cranberry (Oxycoccus microcarpus), crowberry, Saxifraga hirculus, should also be given particular attention. High number of plant species and communities is a result of physiographical diversity of the terrain, richness of habitats and the history of the vegetation development.
