fr, pas-de-calais, hedera helix, fagus sylvatica, ilex aquifolium, lonicera periclymenum, quercus robur, hyacinthoides non-scripta, corylus avellana, arum maculatum, euphorbia amygdaloides, fraxinus excelsior, crataegus monogyna, carex sylvatica, dryopteris filix-mas, pteridium aquilinum, carpinus betulus, quercus petraea, melica uniflora, betula pubescens, holcus mollis, anemone nemorosa, circaea lutetiana, milium effusum, acer campestre, lamium galeobdolon, mercurialis perennis, polygonatum multiflorum, deschampsia flexuosa, teucrium scorodonia, viola reichenbachiana, rosa arvensis, oxalis acetosella, geum urbanum, prunus avium, avenella flexuosa, brachypodium sylvaticum, castanea sativa, ruscus aculeatus, rabelera holostea, galium odoratum, athyrium filix-femina, euonymus europaeus, acer pseudoplatanus, ajuga reptans, viola riviniana, geranium robertianum, betula pendula, dryopteris carthusiana, vicia sepium, luzula pilosa, galium aparine