viola arvensis, apera spica-venti, equisetum arvense, arabidopsis thaliana, capsella bursa-pastoris, fallopia convolvulus, persicaria maculosa, scleranthus annuus, centaurea cyanus, chenopodium album, lycopsis arvensis, roemeria argemone, spergula arvensis, tripleurospermum inodorum, vicia hirsuta