tussilago farfara, atriplex sagittata, ceratodon purpureus, convolvulus arvensis, elymus repens, epilobium tetragonum, equisetum arvense, lepidium draba, lolium perenne, rumex obtusifolius, trifolium pratense, tripleurospermum inodorum, helianthus tuberosus, melilotus albus, polygonum aviculare