text: xanthium strumarium, chenopodium album, cynodon dactylon, digitaria sanguinalis, heliotropium europaeum, portulaca oleracea, amaranthus deflexus, amaranthus retroflexus, cichorium intybus, crithmum maritimum, dittrichia viscosa, erigeron bonariensis, polygonum aviculare, rostraria cristata, setaria pumila, solanum nigrum