New to Russia records of lichens and a lichenicolous fungus from the Kolguev Island (Russian Arctic)

Two species of lichens, Buellia insularis and Polyblastia cataractae, as well as a lichenicolous fungus Lasiosphaeriopsis lecanorae, were identified as new for Russia during the comprehensive studies of vegetation on the Kolguev Island. For each species, a brief description is given based on the specimens studied, differences from closely related species, ecological features, and global distribution are shown.