Abstract
For the first time, an attempt was made to make a taxonomic classification of vascular spore Lyco-phytes and Pteridophytes of the Western Caucasus based on published phylogenetic data. The pro-posed classification of vascular spores represents a modern approach to the allocation of taxa of different ranks, which is based on monophilia as the main criterion. The article analyzes the incon-sistency of information about pteridoflora according to the data of floral reports for the Caucasus and the region. The summary of spore vascular plants of the Western Caucasus is represented by 2 monophyletic classes, 7 monophyletic orders, 11 families, 31 genera and 74 species. Keys for defining families, subfamilies, genera, and species are provided. The problem is considered Pteridium aquilinum and Pteridium tauricum. New taxa are given: Pteridium pinetorum C. N. Page et Mill, Pteridium aquilinum subsp. brevipes, Dryopteris caucasica, Dryopteris pseudorigida (Christ.) A. Askerov, Dryopteris remota (A. Br. ex Döll) Druce.
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