fr, pas-de-calais, corylus avellana, hedera helix, quercus robur, carpinus betulus, lonicera periclymenum, crataegus monogyna, castanea sativa, fagus sylvatica, fraxinus excelsior, acer campestre, cornus sanguinea, euonymus europaeus, betula pendula, polygonatum multiflorum, frangula alnus, ilex aquifolium, prunus spinosa, arum maculatum, prunus avium, pteridium aquilinum, populus tremula, hyacinthoides non-scripta, viburnum opulus, ligustrum vulgare, alliaria petiolata, teucrium scorodonia, lamium galeobdolon, pinus sylvestris, anemone nemorosa, mespilus germanica, ulmus minor, viburnum lantana, quercus petraea, sorbus aucuparia, glechoma hederacea, geum urbanum, acer pseudoplatanus, convallaria majalis, rhamnus cathartica, betula pubescens, rabelera holostea, sambucus nigra, neottia ovata, crataegus laevigata, euphorbia amygdaloides, mercurialis perennis, quercus rubra, brachypodium sylvaticum, tilia cordata, torminalis glaberrima