There are several sites of quite high botanical richness in the District of Kladno (Central Bohemia), which have not been protected yet. The paper presents seven localities, where some endangered plant species occur and the authors suggest them to protect.
One of them is a former arlstone quarry. Other localities are balks or other dry grassland types, which have been remained to these days because of grazing.
Lack of such a management in further times can cause downfall of presented sites.