Two manuscripts on flora of the vicinity of the town Revúca by devoted Slovak polymath Gustáv Maurícius Reuss (1818–1861) are presented and evaluated from lichenological and bryological viewpoint. They comprise 17 lichens, 3 of which are currently red-listed: Anaptychia ciliaris (CR), Evernia prunastri (EN), Brodoa atrofusca (VU). 2 unique vernacular names for Cetraria islandica are commented. 39 mosses and 7 liverworts are mentioned, 3 of which are currently vulnerable: Acaulon muticum, Antrichium curtipendula, Eurhynchium praelongum. Questionable identity of taxa of either groups is pointed at, since original herbarium material is not available.