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Checklist of lichens of Shikotan Island (Southern Kuril Islands, Russian Far East)

Information on lichens of Shikotan Island based on original and literature data is provided. Altogether 278 lichen species and allied fungi are documented, of which Xylographa hians is new to Eurasia, Candelariella subdeflexa is new to Russia, nine species are new to the Russian Far East, 28 species are new to the Sakhalin Region, 39 species are new to Kuril Islands, and 94 species are new to Shikotan Island. For each species, data on distribution in the Sakhalin Region and neighboring regions are given.