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Non-vascular flora (mosses, lichens, mushrooms and algae)
This flora is even richer than the vascular flora. In the absence of exhaustive inventories, specialists estimate that the Park is home to up to 500 bryophyte species – mosses and liverworts – 1,000 lichen species, 1,500 macrofungi and 4,000 microfungi (mushrooms).
Unmanured short-grass prairies, ridge peat bogs and unpolluted streams are particularly rich in non-vascular species of great biological interest.
Some mosses that are dependent on dead tree trunks, such as green shield-moss, are protected at the European level. The first IUCN Red Lists for these large groups have been published.
Algae have not been specifically studied.