brassica napus, papaver rhoeas, viola arvensis, convolvulus arvensis, veronica polita, lamium amplexicaule, descurainia sophia, tripleurospermum inodorum, apera spica-venti, capsella bursa-pastoris, cirsium arvense, delphinium consolida, triticum aestivum, veronica hederifolia, veronica praecox, arctium lappa