fr, pas-de-calais, erodium cicutarium, sedum acre, rosa spinosissima, anchusa officinalis, carex arenaria, veronica arvensis, galium verum, claytonia perfoliata, plantago lanceolata, geranium molle, saponaria officinalis, trifolium arvense, hypochaeris radicata, jacobaea vulgaris, rosa rugosa, rumex acetosella, diplotaxis tenuifolia, luzula campestris, bromus hordeaceus, cerastium arvense, populus alba, rubus caesius, achillea millefolium, agrostis capillaris, hippophae rhamnoides, rumex angiocarpus, crepis capillaris, echium vulgare, calamagrostis epigejos, cardamine hirsuta, cerastium semidecandrum, festuca rubra, saxifraga tridactylites, viola tricolor, corynephorus canescens, jasione montana, trifolium dubium, vicia sativa, ligustrum vulgare, cynoglossum officinale, pilosella officinarum, arenaria serpyllifolia, trifolium repens, ononis spinosa, rhamnus cathartica, lagurus ovatus, trifolium campestre, convolvulus arvensis, anthoxanthum odoratum, arrhenatherum elatius