fr, pas-de-calais, hedera helix, fraxinus excelsior, crataegus monogyna, corylus avellana, acer pseudoplatanus, clematis vitalba, fagus sylvatica, cornus sanguinea, mercurialis perennis, arum maculatum, acer campestre, prunus avium, quercus robur, dioscorea communis, ligustrum vulgare, neottia ovata, sambucus nigra, brachypodium sylvaticum, geum urbanum, fragaria vesca, viburnum lantana, prunus spinosa, sanicula europaea, carpinus betulus, euonymus europaeus, carex sylvatica, rosa arvensis, heracleum sphondylium, lonicera periclymenum, viburnum opulus, galium aparine, viola reichenbachiana, geranium robertianum, urtica dioica, euphorbia amygdaloides, rosa canina, dryopteris filix-mas, betula pendula, glechoma hederacea, ilex aquifolium, rosa blondaeana, ulmus minor, salix caprea, anemone nemorosa, orchis purpurea, polygonatum multiflorum, hyacinthoides non-scripta, circaea lutetiana, lamium galeobdolon, daphne laureola