bromus tectorum, corispermum intermedium, descurainia sophia, equisetum arvense, erigeron canadensis, melilotus officinalis, sisymbrium altissimum, anchusa officinalis, cirsium arvense, elymus repens, lolium perenne, medicago lupulina, rumex acetosella, senecio vernalis, aira praecox, apera spica-venti, arenaria serpyllifolia, artemisia campestris, artemisia vulgaris, berteroa incana, convolvulus arvensis, poa annua, tussilago farfara, lactuca serriola, trifolium arvense, vicia hirsuta