hordeum murinum, artemisia vulgaris, descurainia sophia, erigeron canadensis, lolium perenne, plantago lanceolata, plantago major, achillea millefolium, atriplex patula, bromus tectorum, capsella bursa-pastoris, daucus carota, geranium pusillum, malva neglecta, matricaria discoidea, poa annua, polygonum aviculare, sisymbrium officinale, tripleurospermum inodorum