text: apera spica-venti, arabidopsis thaliana, cirsium arvense, crepis tectorum, fallopia convolvulus, viola arvensis, capsella bursa-pastoris, chenopodium album, elymus repens, hypochaeris glabra, mentha arvensis, poa annua, scleranthus annuus, spergula arvensis, tripleurospermum inodorum, achillea millefolium, argentina anserina, centaurea cyanus, equisetum arvense, persicaria hydropiper, raphanus raphanistrum, vicia hirsuta, vicia sativa