Lichens of deciduous trees in the arboretum of Petrozavodsk State University Botanic Garden

The present study reports 83 lichens on 37 species of deciduous species in the Botanic Garden’s arboretum of Petrozavodsk State University (the Republic of Karelia). The studied deciduous trees were represented by both adventitious introduced species (32) and aboriginal species (5) located on the edge of their range in Karelia, but introduced into culture in the territory of the arboretum. The largest number of lichen species was found on the trunks and branches of Quercus rubra (31) and Acer platanoides (25). Among the recorded lichens, 2 species are listed in the Red Book of the Republic of Karelia, while 4 are new for the territory of the Botanic Garden and 2 - for the territory of the city of Petrozavodsk. In total, 112 species of lichens were found on the trees growing in the arboretum of PetrSU’s Botanic Garden.