This association is dominated by Cotoneaster integerrimus, and on a few sites in southern Moravia also by C. laxiflorus. Individuals of Sorbus aria agg. and other woody species can occur. The herb layer contains thermophilous rock-outcrop species. It is a natural vegetation type of rock outcrops, on which it forms small-scale stands, but it has also spread to deforested rocky slopes. In the Czech Republic it occurs mainly on the volcanic hills of northern Bohemia and in deep river valleys in central Bohemia and south-western Moravia.