arabidopsis thaliana, viola arvensis, achillea millefolium, anthemis arvensis, aphanes arvensis, artemisia vulgaris, capsella bursa-pastoris, centaurea cyanus, fallopia convolvulus, geranium pusillum, lamium amplexicaule, myosotis arvensis, myosotis stricta, papaver rhoeas, polygonum aviculare, stellaria media, tripleurospermum inodorum, valerianella locusta, veronica hederifolia, veronica triphyllos