text: cynodon dactylon, bromus tectorum, elymus repens, erigeron canadensis, amaranthus powellii, bromus japonicus, bromus sterilis, chenopodium album, cichorium intybus, cirsium arvense, convolvulus arvensis, crepis pulchra, crepis tectorum, cynanchum acutum, daucus carota, fallopia convolvulus, hibiscus trionum, lactuca serriola, lepidium draba, medicago minima, polygonum aviculare, setaria viridis, sisymbrium loeselii, sonchus asper, xanthium orientale