text: corynephorus canescens, senecio viscosus, setaria viridis, agrostis capillaris, apera spica-venti, cirsium arvense, erigeron canadensis, rumex acetosella, sisymbrium altissimum, trifolium arvense, tussilago farfara, bromus tectorum, fallopia convolvulus, logfia minima, poa annua, tripleurospermum inodorum