fr, pas-de-calais, sedum acre, erodium cicutarium, arenaria serpyllifolia, hypochaeris radicata, festuca rubra, carex arenaria, plantago lanceolata, eryngium campestre, galium verum, bromus hordeaceus, cerastium semidecandrum, luzula campestris, jacobaea vulgaris, ononis spinosa, aira praecox, lotus corniculatus, myosotis ramosissima, agrostis capillaris, plantago coronopus, rumex acetosella, thymus praecox, veronica arvensis, poa pratensis, pilosella officinarum, rumex angiocarpus, phleum arenarium, koeleria macrantha, thrincia saxatilis, geranium molle, lagurus ovatus, cerastium diffusum, aira caryophyllea, echium vulgare, crepis capillaris, trifolium campestre, vicia sativa, anthyllis vulneraria, anthoxanthum odoratum, trifolium dubium, armeria maritima, vicia lathyroides, achillea millefolium, ranunculus bulbosus, euphorbia portlandica, trifolium arvense, draba verna, polygala vulgaris, mibora minima, trifolium repens, trifolium scabrum