fr, pas-de-calais, prunus serotina, quercus robur, pinus sylvestris, sorbus aucuparia, betula pendula, quercus rubra, avenella flexuosa, lonicera periclymenum, agrostis capillaris, deschampsia flexuosa, ceratocapnos claviculata, amelanchier lamarckii, calluna vulgaris, teucrium scorodonia, rumex acetosella, rumex angiocarpus, dryopteris dilatata, castanea sativa, fagus sylvatica, frangula alnus, ilex aquifolium, claytonia sibirica, carex arenaria, rhododendron ponticum, pinus nigra, vaccinium myrtillus, betula pubescens, acer pseudoplatanus, calamagrostis epigejos, moehringia trinervia, holcus lanatus, sambucus nigra, festuca filiformis, pteridium aquilinum, dryopteris carthusiana, urtica dioica, luzula campestris, molinia caerulea, impatiens parviflora, jacobaea vulgaris, agrostis vinealis, cytisus scoparius, corynephorus canescens, digitalis purpurea, aira praecox, epipactis helleborine, veronica officinalis, senecio sylvaticus, hedera helix, pseudotsuga menziesii