Systematic analysis of the flora of the Russian Caucasus

The flora of the Russian Caucasus is rich and original, but to date, its quantitative composition has not been established, which does not allow for a comprehensive analysis, including a systematic one. Such an analysis makes it possible to identify the specific features of the flora, to show its difference from other floras, as well as to determine the taxonomic similarity of the flora with other regions of the Palearctic. The study was conducted on the basis of an analysis of the list of the flora of the Russian Caucasus, compiled by the author, numbering 4577 species belonging to 1075 genera and 184 families. The basis of the study is the analysis of systematic spectra of families and genera. The proportions of the flora at the level of families, genera and species were determined, systematic spectra of families and genera were compiled. The shift of proportions among angiosperms in the direction of decreasing of dicotyledons and increasing monocots was revealed. It was established that according to the hierarchical subordination of families, the studied flora is of a mixed Mediterranean-Boreal nature. An indicator of the absolute originality of the flora is the presence of 11 endemic genera in its composition. The flora of the Russian Caucasus is of mixed Mediterranean-Boreal origin. Its specific features include a large participation of the largest and large families and genera, monotypic families and genera, and a high generic coefficient. The originality of the flora is determined by the composition of endemic species and genera