SYNOPSIS OF FERNS OF KEMEROVO REGION – KUZBASS

Abstract

Ferns play an important role in the flora and composition of the vegetation cover of the Kemerovo Region. Active research in the region in recent years has led to the identification of new taxa, revision of the circumscription of some genera and families, and clarification of their localities. The purpose of this work is to clarify modern taxonomic composition of the pteridoflora of Kuzbass and the features of distribution of its taxa. The materials for the work were obtained from the authors’ field research, the study of the collections of the P.N. Krylov Herbarium of Tomsk State University (TK), Tomsk, and Herbarium of  the Kuzbass Botanical Garden (KUZ), Kemerovo. The fern flora of  the Kemerovo Region comprises 40 species from 18 genera and 13 families. An analysis of the geographic elements of the fern flora has shown that it is dominated by species with a wide Holarctic ranges. The ecological composition according to the moisture regime reflects current conditions of the region, with mesophytes and mesohygrophytes accounting for 92.8% of the species composition. According to the factor of the substrate rockiness, two subequal groups are distinguished: petrophytes and non-petrophytes. The groups of petrophytic (47.5%) and forest (40.0%) species make the highest contribution to the composition of the fern flora. Herbaceous monocarpics are represented by Salvinia natans only, the rest are perennials. The analysis of the relict component has shown that 26 taxa belong to the tertiary relicts, most of which are associated in their origin with forest vegetation of the Paleogene-Neogene, nine taxa belong to the relict element of the petrophyton. 19 fern species are listed in the Red Book of Kuzbass.