saxifraga tridactylites, arenaria serpyllifolia, arabidopsis thaliana, cerastium semidecandrum, funaria hygrometrica, myosotis stricta, sagina procumbens, senecio vernalis, veronica arvensis, bassia scoparia, erigeron canadensis, galium aparine, hypericum perforatum, poa annua, rumex thyrsiflorus, acer pseudoplatanus, jacobaea vulgaris, salsola tragus, solidago canadensis, bromus sterilis, cirsium vulgare, holcus lanatus