Low-altitude xerophile, rupicolous or psammophilous, grasslands of slightly calcareous substrates, with Festuca heteropachys, F. trachyphylla, Koeleria macrantha (= K. gracilis), Phleum phleoides, Armeria elongata, Artemisia campestris, Aster linosyris, Lychnis viscaria, Silene otites, S. nutans, Chamaespartium sagittale, Campanula patula, Potentilla rupestris, Helianthemum nummularium ssp. obscurum, H. apenninum, Scleranthus perennis, Allium senescens ssp. montanum.