First records of lichenised and lichenicolous fungi for the lichen flora of Russia and Eastern Europe

Noteworthy findings of two lichen species and four lichenicolous fungi are presented. Two species, Celothelium ischnobelum collected from the Nizhnii Novgorod Region and Opegrapha reactiva from the Murmansk Region, are reported for the first time for Russia and Eastern Europe. Four species, Arthonia destruens, Lichenochora galligena, and Schizoxylon albescens collected in the Nizhnii Novgorod Region, and Sphaeropezia cucularis in the Murmansk Region, are new for European Russia. The genus Celothelium is reported for the first time for Russia.