Abstract
The annotated list of mosses of two local floras from Mezen River basin in Wesern Komi Republic is presented. In the list K mean Koslan (63° 30'N - 48° 50'E) G - Glotovo (63° 30'N - 49° 20'E). The list includes 120 species of 23 families and 49 genera. 29 species are reported as new for Mezensko-Vychegodskaya plain; among of them Heterocladium dimorphum and Eurhynchium hians are new for the Komi Republic.