Abstract
This article was description 3 natural populations of a rare, endemicand relict plants Limonium michelsonii Lincz and their natural habitat. Atthe same time all kinds of plants are identified and systematic analyzed,that growing in three natural populations (9 cenopopulations) of associationLimonium michelsonii Lincz. As a result, were identified the first population (1-3 cenopopulations) 83 species belonging to 24 families and secondpopulation (4-6 cenopopulations) 19 species belonging to 11 families and athird population (7-9 cenopopulations) 18 species belonging to 7 families.According to data collected by the differences between natural populationsof the species composition of the association was calculated with formulasof biodiversity indicators, which Jacquard, Syorensen – Chekanovsk, Rogersand Tanymoto (Nordxagen), Mawntford, Chimkevich – Simpson), BrownBlanc. According to the results of these figures calculations conformity studyobserved that the strong influence of anthropology to three natural populations of Limonium michelsonii Lincz and their common plants association,especially the dangerous conditions of the №2 and №3 populations andtheir habitat. The main reason is that permanent grazing.Key words: rare species, endemic, relict, Limonium michelsoniiLincz., species composition, Assessment of biodiversity indicators