Rare, extremely local and isolated associations of clifftops and adjacent areas dispersed along the coasts of Provence, Cap Corse, the Straits of Bonifacio, Catalonia (Cabo de Creus) and extreme southwestern Portugal, characterized by the presence of Astragalus massiliensis or Anthyllis hermanniae, variously accompanied by Thymelaea hirsuta, Helichrysum italicum, Plantago subulata, Armeria ruscinonensis.