A new locality of Iris pontica Zapał. listed in the Red Data Book of Ukraine was found in Berezovsky District, Odessa Region. It is located within the Black Sea Lowland and is the southernmost one in the area between the Dniester and the Dnieper Rivers. The population occupies an area of about 90 sq. m. It is a part of the forbs-fescue plant association, which consists of 58 species of flowering plants from 22 families, including five species from the Red Data Book of Ukraine. The phytocoenosis is of a low level of synanthropization. Population is formed by 37 clumps, their size varies from 15 to 90 cm in diameter (on average 50–60 cm). It was revealed that rejuvenation of the clones begins simultaneously with particulation and this process intensifies in aged clones. At the age spectrum, population is found to be normal and typical for the plants with large life-cycle and indefinitely long ontogeny. Despite antropogenic influence, the population is in a satisfactory state.
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