Mosses of the city of Petrozavodsk (based on the data from the Botanic garden and Herbarium (H) of the University of Helsinki)

In 2009 and 2013, the author discovered 204 moss samples from Petrozavodsk in the Herbarium (H) of the Helsinki University Botanic Garden. The samples werecollected by W. Nylander (1850), А. Kullhem (1860, 1863, 1869), Th. Simming (1862, 1863, 1869), A. Gunther (1862, 1863), M. Brenner (1863), Th. Saelan (1865), J. Sahlberg (1869), J. P Norrlin (1870), F. Elfving (1871), J. I. Liro and A. K. Cajander (1898), U. Perttulа (1941), and M. Kotilainen (1943). A list of mosses, consisting of 116 taxa (112 species and 4 varieties), is presented together with the sampling dates, collectors’ names and herbarium sample number. Some of the taxa (67 species and 2 varieties) have been published (Brotherus, 1923; Ahti & Boychuk, 2006). Comparison of herbarium and modern data (172 species: Plants and lichens of the city of Petrozavodsk, 2010) in the field of the moss flora of the city (79 common species, or 70 percent) were compared. The mosses in semi-aquatic and rocky habitats were found to be the most sensitive to the human impact. Available data shows that the moss flora of Petrozavodsk consists of 210 taxa (206 species and 4 varieties).