papaver rhoeas, sisymbrium altissimum, artemisia vulgaris, arabidopsis thaliana, arenaria serpyllifolia, bromus sterilis, capsella bursa-pastoris, elymus repens, erigeron canadensis, poa pratensis, sisymbrium officinale, agrostis stolonifera, dactylis glomerata, lactuca serriola, matricaria discoidea, melilotus officinalis, plantago major, poa trivialis, veronica arvensis, cirsium arvense, cirsium vulgare, descurainia sophia, geranium pusillum, plantago lanceolata, polygonum aviculare, sonchus oleraceus