text: chenopodium album, elymus repens, setaria viridis, viola arvensis, apera spica-venti, arabidopsis thaliana, capsella bursa-pastoris, cirsium arvense, convolvulus arvensis, erigeron canadensis, fallopia convolvulus, fumaria officinalis, raphanus raphanistrum, scleranthus annuus, spergula arvensis, trifolium arvense, tripleurospermum inodorum, achillea millefolium, artemisia vulgaris, centaurea cyanus