fr, pas-de-calais, hedera helix, fagus sylvatica, fraxinus excelsior, corylus avellana, arum maculatum, carpinus betulus, lonicera periclymenum, quercus robur, carex sylvatica, acer campestre, crataegus monogyna, hyacinthoides non-scripta, anemone nemorosa, prunus avium, polygonatum multiflorum, mercurialis perennis, quercus petraea, acer pseudoplatanus, milium effusum, euphorbia amygdaloides, lamium galeobdolon, cornus sanguinea, rosa arvensis, dryopteris filix-mas, viola reichenbachiana, ilex aquifolium, melica uniflora, geum urbanum, brachypodium sylvaticum, euonymus europaeus, ligustrum vulgare, galium odoratum, betula pendula, torminalis glaberrima, circaea lutetiana, betula pubescens, fragaria vesca, adoxa moschatellina, luzula pilosa, ficaria verna, pteridium aquilinum, sorbus aucuparia, galium aparine, poa nemoralis, crataegus laevigata, rabelera holostea, clematis vitalba, vicia sepium, teucrium scorodonia, prunus spinosa