fr, pas-de-calais, lonicera periclymenum, quercus robur, hedera helix, fagus sylvatica, betula pubescens, hyacinthoides non-scripta, corylus avellana, carpinus betulus, fraxinus excelsior, ilex aquifolium, pteridium aquilinum, quercus petraea, deschampsia flexuosa, polygonatum multiflorum, holcus mollis, betula pendula, anemone nemorosa, crataegus monogyna, avenella flexuosa, arum maculatum, dryopteris carthusiana, carex sylvatica, teucrium scorodonia, dryopteris filix-mas, circaea lutetiana, euphorbia amygdaloides, milium effusum, castanea sativa, lamium galeobdolon, sorbus aucuparia, athyrium filix-femina, prunus avium, oxalis acetosella, luzula pilosa, frangula alnus, alnus glutinosa, acer pseudoplatanus, acer campestre, rabelera holostea, rosa arvensis, geum urbanum, vaccinium myrtillus, populus tremula, melica uniflora, carex pilulifera, molinia caerulea, deschampsia cespitosa, viola reichenbachiana, euonymus europaeus, viola riviniana