heliotropium europaeum, amaranthus albus, convolvulus arvensis, chenopodium album, datura stramonium, scolymus hispanicus, xanthium spinosum, avena barbata, carduus tenuiflorus, cynodon dactylon, digitaria sanguinalis, dittrichia graveolens, echium plantagineum, papaver rhoeas, phalaris minor