On the basis of the results of research conducted during the 2014-2016 period, conducted a taxonomic analysis and bio morphological species Phlomis salicifoliya Regel. genus Phlomis L. flora of the Nakhchivan Autonomous Republic. It was revealed that in the territory of the Autonomous Republic occur, uneven distribution of plants in the family Lamiaceae Lindl. On the belts and adaptation to new conditions of life. Distribution of species of the family on geobotanical areas is directly dependent on the complexity of the terrain, and differences in exposures steepness of the mountain slopes. Within each high-altitude belt plant species mainly represented by one or sometimes several formations. As a result of geographical studies in the flora of the Nakhchivan Autonomous Republic found 129 species of Lamiaceae Lindl., members of the 30 genera of the family. The article presents the results of a study of antioxidant activity of fruits Phlomis salicifoliya Regel purple loosestrife in the emulsion system of linoleum acid. The dependence of the antioxidant activity of the extract concentration. High activity of ethanol extract (83.1%) evaluated at a concentration of 40 ug / ml as compared to the activity of α-tokoferola 79.8% and 91.6% butyl hydroxyanisole.