fr, pas-de-calais, quercus robur, lonicera periclymenum, carpinus betulus, betula pubescens, hedera helix, fagus sylvatica, corylus avellana, fraxinus excelsior, dryopteris carthusiana, crataegus monogyna, anemone nemorosa, carex sylvatica, holcus mollis, circaea lutetiana, betula pendula, pteridium aquilinum, athyrium filix-femina, deschampsia cespitosa, ajuga reptans, dryopteris filix-mas, polygonatum multiflorum, carex remota, frangula alnus, glechoma hederacea, oxalis acetosella, teucrium scorodonia, ilex aquifolium, alnus glutinosa, geum urbanum, viola riviniana, viola reichenbachiana, populus tremula, milium effusum, arum maculatum, juncus effusus, luzula pilosa, sorbus aucuparia, hyacinthoides non-scripta, brachypodium sylvaticum, poa trivialis, crataegus laevigata, deschampsia flexuosa, rabelera holostea, ficaria verna, quercus petraea, molinia caerulea, acer campestre, lamium galeobdolon, geranium robertianum, euphorbia amygdaloides