ADDITION TO THE LICHEN FLORA OF RUSSIA. I. THE SPECIES OF THE GENUS CALOPLACA (TELOSCHISTACEAE) FROM THE NORTHWESTERN CAUCASUS
In the study of the lichen flora of the limestone Lagonaki Plateau in the North-western Caucasus (Caucasus Reserve) some species of the genus Caloplaca not previously known in the Caucasus were found. Among them four species are new to the lichen flora of Russia: Caloplaca anularis Clauzade et Poelt, C. arnoldii Zahlbr. ex Ginzb., C. australis (Arnold) Zahlbr. and C. nubigena (Kremp.) Dalla Torre et Sarnth. The data on their distribution and ecology are presented.