text: brassica napus, helminthotheca echioides, silene latifolia, artemisia vulgaris, capsella bursa-pastoris, cichorium intybus, dactylis glomerata, daucus carota, dipsacus fullonum, erigeron annuus, hypericum perforatum, malva sylvestris, melilotus albus, rumex crispus, trifolium repens, verbena officinalis, achillea collina, centaurea nigrescens, cirsium vulgare, convolvulus arvensis, elymus repens, equisetum ramosissimum, erigeron canadensis, euphorbia platyphyllos, lactuca serriola, lotus corniculatus, matricaria chamomilla, medicago lupulina, papaver rhoeas, plantago lanceolata, rubus ulmifolius, sorghum halepense