ceratodon purpureus, tortula muralis, cymbalaria muralis, bryum argenteum, streblotrichum convolutum, sagina procumbens, asplenium ruta-muraria, asplenium scolopendrium, dryopteris filix-mas, gemmabryum caespiticium, holcus lanatus, plantago major, poa angustifolia, poa annua, rosulabryum capillare, sonchus oleraceus