ceratodon purpureus, poa compressa, potentilla argentea, plagiothecium denticulatum, sempervivum globiferum, tortula muralis, achillea millefolium, bryum argenteum, delphinium consolida, lactuca serriola, sedum acre, sisymbrium officinale, chenopodium album, clinopodium acinos, euphorbia cyparissias, lepidium ruderale, sempervivum tectorum