text: polygonum aviculare, cynodon dactylon, erigeron canadensis, lolium perenne, plantago major, salvia nemorosa, trifolium repens, amaranthus albus, amaranthus retroflexus, atriplex tatarica, capsella bursa-pastoris, chenopodium album, cichorium intybus, convolvulus arvensis, echinochloa crus-galli, galinsoga parviflora, lepidium ruderale, malva pusilla, medicago lupulina, setaria verticillata, sorghum halepense, verbena officinalis, xanthium strumarium