text: apera spica-venti, elymus repens, aphanes arvensis, arabidopsis thaliana, capsella bursa-pastoris, centaurea cyanus, chenopodium album, erigeron canadensis, fallopia convolvulus, rumex acetosella, scleranthus annuus, setaria viridis, stellaria media, trifolium arvense, tripleurospermum inodorum, vicia hirsuta, vicia sativa, artemisia vulgaris, spergula arvensis