This article provides analysis of the Dongyztau flora. The result of floristic analysis found out that 314 species of vascular plants belonging to 170 genera and 40 families grow on the territory of Dongyztau chink. The analysis of the family-species spectrum reveals that the 5 leading families make up 78.3 % of the total species composition, or 246 species. The leading families in this area are Amaranthaceae, Asteraceae, Brassicaceae, Poaceae, Fabaceae. The leading position is occupied by the Amaranthaceae family represented by 67 species that makes up 21.3 % of the species composition of the flora. The second position is occupied by the Asteraceae family including 40 species (12.7 %). The predominance of these families in the flora of the area characterizes it as a continental territory with arid habitat conditions. The presence of 5 endemic and 18 relict species was noted. Life forms are represented by 7 groups, among which the perennial herbaceous plants are dominant. The analysis of rare and endangered species of Dongyztau chink plants showed the growing of 21 species, of which 5 ones are listed in the Red book of Kazakhstan; 16 species are recommended for protection in the region.


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