eragrostis minor, digitaria sanguinalis, setaria viridis, bryum argenteum, ceratodon purpureus, chenopodium album, erigeron canadensis, gemmabryum caespiticium, lepidium densiflorum, amaranthus hybridus, apera spica-venti, bromus tectorum, capsella bursa-pastoris, echinochloa crus-galli, lepidium ruderale, lolium perenne, medicago lupulina, polygonum aviculare, trifolium arvense, tripleurospermum inodorum, viola arvensis, lactuca serriola, plantago major