text: convolvulus arvensis, chenopodium album, cynodon dactylon, heliotropium europaeum, polygonum aviculare, amaranthus retroflexus, buglossoides arvensis, centaurea cyanus, cichorium intybus, cirsium arvense, datura stramonium, lepidium draba, lotus corniculatus, lysimachia arvensis, medicago orbicularis, portulaca oleracea, vicia pannonica, xanthium spinosum