fr, pas-de-calais, hippophae rhamnoides, carex arenaria, calamagrostis epigejos, phleum arenarium, cerastium semidecandrum, jacobaea vulgaris, sedum acre, cynoglossum officinale, festuca rubra, euphorbia paralias, salix repens, hypochaeris radicata, eryngium maritimum, erodium cicutarium, rubus caesius, myosotis ramosissima, sonchus arvensis, arenaria serpyllifolia, cakile maritima, ligustrum vulgare, poa pratensis, galium verum, elymus athericus, ononis spinosa, lagurus ovatus, veronica arvensis, aira praecox, asparagus officinalis, solanum dulcamara, cirsium arvense, agrostis stolonifera, erigeron canadensis, claytonia perfoliata, crepis capillaris, cerastium diffusum, koeleria macrantha, luzula campestris, senecio inaequidens, phragmites australis, thinopyrum junceiforme, corynephorus canescens, saxifraga tridactylites, holcus lanatus, epipactis palustris, diplotaxis tenuifolia, lotus corniculatus, parnassia palustris, echium vulgare, silene conica, draba verna