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From the middle of the Oligocene epoch of the Paleogene period evergreen Poltava flora had been replaced by deciduous tree species of Turgai flora. The taxonomic composition of the relict trees and shrubs belonging to the Turgai flora in Azerbaijan and their botanical and geographical characteristics are analyzed in this article. In the article also analyzed the characteristics of the relict areal and the genetic varieties that stood the changes in the geological periods, while preserving its gene pool so far. In modern times, Turgai flora remaining relicts are more common in Hirkan (Azerbaijan), in Colchis (Georgia), and partially in the forests surrounding the Southern hills of the Greater Caucasus. Mesothermic plants of Turgai flora in Azerbaijan are found combining 17 families and 28 genera in 38 species of trees and shrubs.
S. Qarayev (Fri,) studied this question.
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