text: cynodon dactylon, convolvulus arvensis, amaranthus retroflexus, artemisia absinthium, bromus tectorum, chenopodium album, crepis foetida, crepis tectorum, descurainia sophia, elymus repens, erigeron canadensis, fumaria schleicheri, lactuca serriola, medicago minima, setaria viridis, sonchus asper, xanthium orientale