The rich flora of the Cévennes has attracted several generations of botanists, but is today under-explored. The National Park works hard to improve its knowledge of this flora, especially the protected species. In this endeavour, it depends on a network of volunteer botanists and also collaborates with the National Mediterranean Botanical Conservatories at Porquerolles and in the Massif Central.
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).