eragrostis minor, erigeron canadensis, achillea millefolium, agrostis capillaris, amaranthus albus, bromus hordeaceus, capsella bursa-pastoris, ceratodon purpureus, chaenorhinum minus, cirsium arvense, convolvulus arvensis, daucus carota, echium vulgare, erysimum cheiranthoides, lepidium densiflorum, lolium giganteum, melilotus officinalis, pilosella officinarum, pimpinella saxifraga, poa pratensis, pohlia nutans, setaria pumila, trifolium campestre