The state of the populations of Schivereckia podolica (Brassicaceae) in the limestones of the north of the central Russian upland

摘要

The information about an area of a rare and relict species Schivereckia podolica L. grown on the limestone's north of the Middle Russian Upland is given. The conditions of the species is analysed in view of its main population characteristics (age of spectra, areas and density). Habitats with optimal, satisfactory and critical conditions of the species are identified. The special measures of protection are recommended.