In this thesis I have studied biodiversity of vascular plants and vegetation in the territory of European importance Hornádske lúky. The study area is situated in the eastern Slovakia, in the Čierna hora mountain sub-area near to the territory of European importance Stredné Pohornádie. There is a 2th degree of nature conservation in the entire nature territory. The main aim of this thesis is to provide an overview of flora and vegetation habitats of this area and record their species composition by phytosociological relevés. By comparing the data of flora with the older works from the area, altogether 138 taxa of vascular plants were recorded, including 124 new species. The occurrence of endemic and protected species of European importance, Pulsatilla slavica was confirmed and their habitat was documented by phytosociological relevé. There are also significant habitats of European importance in the area present, such as Asperulo-Fagetum beech forests (9130), Luzulo-Fagetum beech forests (9110) and Arrhenatherion lowland hay meadows (6510). We also propose the protection of widespread dry heaths with Calluna vulgaris (4030) in the territory, because they have not been the subject of protection so far. In the protected area we also have recorded the occurrence of non-native and invasive species caused by hunting activities. We propose the removal of these non-native plant species and correction of game animal management.