fr, pas-de-calais, carex arenaria, cynoglossum officinale, cerastium semidecandrum, calamagrostis epigejos, jacobaea vulgaris, galium verum, luzula campestris, koeleria macrantha, rubus caesius, erodium cicutarium, phleum arenarium, corynephorus canescens, sedum acre, myosotis ramosissima, veronica arvensis, poa pratensis, polygonatum odoratum, ligustrum vulgare, veronica officinalis, aira praecox, festuca rubra, rosa spinosissima, festuca filiformis, viola tricolor, rumex acetosella, hippophae rhamnoides, senecio sylvaticus, cardamine hirsuta, rumex angiocarpus, thymus pulegioides, crataegus monogyna, galium mollugo, agrostis capillaris, saxifraga tridactylites, avenula pubescens, draba verna, hypochaeris radicata, vicia lathyroides, pilosella officinarum, cerastium arvense, ononis spinosa, salix repens, lotus corniculatus, polygala vulgaris, erodium lebelii, urtica dioica, quercus robur, moehringia trinervia, arenaria serpyllifolia, bryonia dioica