Ascospore germination and hyphal growth of the following lichen genera were tested in various concentrations of NaCl: Arthonia, Buellia, Caloplaca, Cladonia, Graphis, Lecanora, Mye- lochroa, Ochrolechia, Parmelia, Porpidia, Ramalina, Stereocaulon and Usnea. At high NaCl concen trations spore germination and hyphal growth were inhibited, and the shape of the hyphae was twisted and gnarled; their tips were more swollen, and the biomass of hyphae much reduced. No spores of the tested species germinated at 1.2 m NaCl. The influence of NaCl concentration on spore germination and hyphal growth of the tested lichens was not related to their habitats.