This area in Central Bohemia is characterized by predominantly limestone bedrock and fully-developed karstic phenomena – the main reasons for its high botanical di - versity and occurrence of many rare and endangered species. In the center of the area, well-developed broad-leaved forests are found, as well as xerothermophilous non-forest vegetation. At the borders of the area, acidophilous, basiphilous and serpen - tinophilous plants occur on non-calcareous rocks (e. g. slates, basaltoids, picrites). and Pavel Špryňar.