Among a small collection of lichens from the central part of Sakhalin Island, Russian Far East, 34 species were identified, of which 32 were known from Hokkaido, and 27 from Honshu, Japan. Cladonia hokkaidensis is first found outside Hokkaido. lichens, lichenized Ascomycota, flora, Russian Far East, Sakhalin, Cladonia hokkaidensis