melilotus albus, achillea millefolium, gemmabryum caespiticium, ceratodon purpureus, elymus repens, erigeron acris, erigeron canadensis, gemmabryum dichotomum, lolium pratense, streblotrichum convolutum, tussilago farfara, artemisia vulgaris, poa angustifolia, viola arvensis, polygonum aviculare, rumex acetosella, sinapis arvensis, vicia sativa