The present study reports 223 species and three subspecies of lichens from forest rocky communities of mountain Olovgora, which is the highest point of the Vetreny Poyas ridge (Arkhangelsk Region, NW Russia). A total of 82 species are new for the mainland area of Arkhangelsk Region. The species Bryoria glabra has been reported for the first time for European Russia. Two recorded lichen species, Cladonia bellidiflora and Lobaria pulmonaria, are in the Red Data Book of Arkhangelsk Region. The occurrence of old-growth forests, high heterogeneity of conditions, presence of an altitudinal gradient and the proximity to the sea lead to the rich diversity of lichens in this area.

The present study reports 228 species of lichens and lichenicolous or non-lichenized saprobic fungi in Petrozavodsk (Republic of Karelia, Russia). Seven lichen species of Karelian Red Data Book are recorded. Three species are reported for the first time for Karelia: Arthonia fusca (A. Massal.) Hepp, Hypocenomyce caradocensis (Leight. ex Nyl.) P. James & Gotth. Schneid., and Pycnora sorophora (Vain.) Hafellner. 47 species are reported as new to Karelia olonetsensis, 7 species as new to Karelia onegensis (Fadeeva et al., 2007).

Abstract:The present study reports 188 species and 2 subspecies of lichens and allied fungi from forest rocky communities of the hill Muroigora situated in the Arkhangelsk part of the National park "Vodlozersky" (Arkhangelsk Region, NW Russia).

The paper presents the results of the ongoing research of lichen diversity in Arkhangelsk Region of Russia, in Vodlozersky National Park which is the largest protected area in the territory of NW Russia. In total, 155 species of lichens and allied fungi are recorded for the first time for the Arkhangelsk part of the Vodlozersky National Park, and 69 species – for the whole mainland area of Arkhangelsk Region.

A historical lichen collection in the Herbarium of the Botanical Museum, University of Helsinki, collected in the 19 th and 20 th centuries from the territory of Petrozavodsk (Republic of Karelia, Russia) was examined. A revision of 354 herbarium packets containing 674 specimens resulted in a list of 227 species of lichens and lichenicolous or non-lichenized saprobic fungi. Our historical list added 102 new species to the lichen flora of the city, which now contains 330 species. Xylographa trunciseda is a new lichen record for North-Western Russia. Seven species were registered for Karelia for the first time. 40 species are new to the biogeographic province Karelia olonetsensis and four species -to Karelia onegensis.