Plant communities belonging to seminatural vegetation distributed in traditional rural habitats are described. Field investigation of vegetation was carried out by transect method in Šaukliai and Kulaliai geological reservations, boulder accumulations, earlier used as pastures. The classification of relevés was carried out according to the criteria of J. Braun-Blanquet. For identification of degressive stage of pastures K. Kopecky and S. Hejny method of deductive classification was applied. As a result of the classification the ass. Calluno-Nardetum strictae (with two variants and one facies) and derivative community Urtica dioica-[Molinio-Arrhenatheretea/Nardo-Callunetea] were distinguished. Acid soils, lack of nitrogen in soil, maritime climate of the locality define distribution of the association. Derivative community arose in place of degraded Calluno-Nardetum strictae because of pasture degression. Juniperus communis is not strongly competitive in the investigated heaths. In open boulder accumulations Deschamsia cespitosa is the most important component of phytocoenoses.
Keywords: habitats, boulder accumulations, heaths, Juniperus communis formations, Lithuania.