Natural habitats of typical plants growing on ruins of Roman archaeological sites (Rome, Italy)

Particularly, some wall species belonging to Parietarietea judaicae class are participating in the formation of natural rocky communities of Asplenietea trichomanis . Species occurring on emerging ruins form ephemeral meadows belonging to Helianthemetea guttati , also found in natural Mediterranean environment. On wide tops of ruins, where community dynamism is higher, some perennial herbaceous and shrubby species participate in the formation of impoverished communities matching to natural aspects of Mediterranean maquis.

The knowledge of the natural habitat of wall species can be useful for a better management of archaeological sites.