fr, pas-de-calais, fagus sylvatica, hedera helix, hyacinthoides non-scripta, corylus avellana, lonicera periclymenum, carpinus betulus, pteridium aquilinum, castanea sativa, ilex aquifolium, fraxinus excelsior, crataegus monogyna, euphorbia amygdaloides, betula pendula, teucrium scorodonia, quercus robur, mercurialis perennis, quercus petraea, ligustrum vulgare, acer campestre, carex sylvatica, arum maculatum, betula pubescens, dryopteris filix-mas, acer pseudoplatanus, cornus sanguinea, torminalis glaberrima, prunus avium, brachypodium sylvaticum, mespilus germanica, ruscus aculeatus, lamium galeobdolon, pinus sylvestris, polygonatum multiflorum, avenella flexuosa, rubus fruticosus, dryopteris carthusiana, fragaria vesca, rosa arvensis, euonymus europaeus, geum urbanum, circaea lutetiana, anemone nemorosa, viburnum lantana, sorbus aucuparia, populus tremula, calluna vulgaris, clematis vitalba, prunus spinosa, viola reichenbachiana, carex pilulifera