Dry, calcareous inland cliffs. Specific plant associations colonize montane and Mediterranean cliffs. Most of the subdivisions refer to them. Northern lowland cliffs usually support fragments of other less specialized communities.
Calcareous cliff and rock communities of the Maritime Alps and northern Apennines, with Saxifraga lingulata, Primula marginata, Primula allionii, Phyteuma charmelii, Phyteuma villarsii, Silene campanula, Potentilla saxifraga, Ballota frutescens.