hordeum murinum, achillea setacea, amaranthus retroflexus, arctium lappa, artemisia absinthium, artemisia annua, bromus arvensis, capsella bursa-pastoris, cichorium intybus, convolvulus arvensis, lappula squarrosa, lolium perenne, thlaspi arvense, tripleurospermum inodorum, xanthium spinosum