bunias orientalis, lactuca serriola, achillea millefolium, amaranthus retroflexus, berteroa incana, bromus hordeaceus, capsella bursa-pastoris, ceratodon purpureus, cirsium arvense, descurainia sophia, erigeron canadensis, lolium perenne, medicago lupulina, polygonum aviculare, sisymbrium loeselii