Parmotrema subtinctorium (Ascomycota, Parmeliaceae) — a new lichen for Russia from the south of Far East

Parmotrema subtinctorium is reported for the first time for the lichen flora of Russia from the Jewish Autonomous Region, south of the Far East. For the studied samples, a description of anatomy, morphology and secondary metabolites is given. The morphological features of the material from the south of the Far East and differences from related species are discussed. Information about the ecology of this rare species and its distribution is presented.