helminthotheca echioides, daucus carota, lotus tenuis, melilotus albus, phalaris aquatica, convolvulus arvensis, dipsacus fullonum, erigeron canadensis, foeniculum vulgare, lactuca virosa, medicago lupulina, picris hieracioides, plantago lanceolata, pulicaria dysenterica, symphyotrichum squamatum, tussilago farfara, verbena officinalis, cirsium vulgare, persicaria maculosa, potentilla reptans, sonchus oleraceus