fr, pas-de-calais, achillea millefolium, plantago lanceolata, trifolium arvense, diplotaxis tenuifolia, erigeron canadensis, daucus carota, festuca rubra, sedum acre, medicago lupulina, vicia hirsuta, erodium cicutarium, dactylis glomerata, jacobaea vulgaris, tanacetum vulgare, veronica arvensis, melilotus albus, arrhenatherum elatius, geranium molle, claytonia perfoliata, berteroa incana, artemisia vulgaris, erigeron sumatrensis, arenaria serpyllifolia, vicia sativa, hypochaeris radicata, bromus hordeaceus, crepis capillaris, senecio inaequidens, trifolium campestre, carex arenaria, trifolium dubium, echium vulgare, lolium perenne, oenothera biennis, medicago sativa, holcus lanatus, pastinaca sativa, trifolium pratense, herniaria glabra, picris hieracioides, linaria vulgaris, rosa rugosa, trifolium repens, silene latifolia, sisymbrium altissimum, anchusa officinalis, poa pratensis, saponaria officinalis, poa annua, senecio vulgaris