Borovichev E.A. Botanical excursion on the Northern Soroya. Hammerfest, 2014.

Lichens on trees and shrubs Trees and shrubs are covered by epiphytic lichens. More often lichens occur on the trunk base and on epiphytic mosses. Epiphytic lichens are not very diverse and abundant in the northern part o f the Somya Island because o f low proportion o f trees and harsh winter conditions for living o f epiphytes. Parmeliella triptophylla on the bark ofMountain Ash (Sorbus aucuparia ssp. glabrata) Biatora globulosa on the bark o fMountain Ash, sometimes &grows on wood without bark Mycobilimbia tetramera on mosses at the trunk base o fMountain Ash 100