text: mercurialis annua, amaranthus retroflexus, chenopodium album, convolvulus arvensis, diplotaxis erucoides, lysimachia arvensis, solanum nigrum, calendula arvensis, cirsium arvense, daucus carota, digitaria sanguinalis, heliotropium europaeum, helminthotheca echioides, linaria vulgaris, misopates orontium, picris hieracioides, portulaca oleracea, rumex pulcher, senecio vulgaris, setaria viridis, sonchus asper, veronica persica