text: ceratodon purpureus, brachythecium albicans, arabidopsis arenosa, tortella tortuosa, arenaria serpyllifolia, senecio vernalis, achillea millefolium, bryum argenteum, saxifraga tridactylites, acer negundo, arrhenatherum elatius, artemisia campestris, artemisia vulgaris, berteroa incana, bromus tectorum, centaurea stoebe, erigeron canadensis, euphorbia cyparissias, falcaria vulgaris, festuca trachyphylla, holosteum umbellatum, medicago falcata, myosotis stricta, oenothera biennis, picris hieracioides, poa compressa, sedum acre, syntrichia ruralis, tanacetum vulgare, tragopogon dubius, viola arvensis, verbascum thapsus