cynodon dactylon, bromus tectorum, dasypyrum villosum, cyperus rotundus, chondrilla juncea, solanum linnaeanum, arundo donax, avena barbata, chenopodium album, erigeron canadensis, medicago lupulina, trifolium angustifolium, lactuca serriola, medicago polymorpha, polygonum aviculare, rumex acetosella, xanthium strumarium