oenothera biennis, senecio viscosus, cirsium arvense, corispermum intermedium, bromus tectorum, corynephorus canescens, erigeron canadensis, hypochaeris radicata, koeleria macrantha, ononis spinosa, phleum arenarium, rumex crispus, salsola kali, sedum acre, sisymbrium altissimum