These Festuca ovina dominated grasslands are composed of moderately thermophilous and drought-adapted species which readily spread into dry pastures across the cultural landscapes of mid-altitudes. They are confined to shallow soils over hard siliceous bedrocks. Most localities are found in colline and submontane belts of the Bohemian Massif in central and southern Bohemia and south-western Moravia. Some occurrences have also been recorded elsewhere on nutrient-poor acidic soils.