Thermophilous chasmophytic vegetation of walls of the Mediterranean and the winter-mild atlantic to subcontinental regions of temperate Europe, Middle East and North Africa
Vascular plants: Antirrhinum australe, Antirrhinum barrelieri subsp. litigiosum, Antirrhinum graniticum subsp. boissieri, Antirrhinum majus subsp. majus, Antirrhinum majus subsp. tortuosum, Antirrhinum meonanthum, Antirrhinum siculum, Asplenium ceterach subsp. ceterach, Asplenium ruta-muraria subsp. ruta-muraria, Asplenium septentrionale, Asplenium trichomanes subsp. quadrivalens, Asplenium x alternifolium nothosubsp. heufleri, Asplenium x badense, Asplenium x murbeckii, Campanula tubulosa, Capparis orientalis, Capparis spinosa, Centranthus ruber subsp. ruber, Centranthus ruber subsp. sibthorpii, Chaenorhinum villosum, Chelidonium majus, Cymbalaria muralis, Cyrtomium falcatum, Cyrtomium fortunei, Erigeron karvinskianus, Erysimum cheiri, Ficus carica, Hyoscyamus aureus, Hyoseris radiata, Hypericum majus, Lactuca tenerrima, Parietaria judaica, Parietaria mauritanica, Phagnalon sordidum, Sedum dasyphyllum subsp. dasyphyllum, Sonchus tenerrimus, Stachys circinata, Stachys ionica, Tolpis succulenta, Trachelium caeruleum, Umbilicus gaditanus, Umbilicus horizontalis, Umbilicus rupestris