fr, pas-de-calais, hedera helix, quercus robur, heracleum sphondylium, crataegus monogyna, arum maculatum, fraxinus excelsior, euonymus europaeus, acer campestre, cornus sanguinea, prunus spinosa, corylus avellana, carpinus betulus, urtica dioica, cruciata laevipes, glechoma hederacea, ranunculus repens, dactylis glomerata, poa trivialis, galium aparine, rabelera holostea, dioscorea communis, cardamine pratensis, ulmus minor, ranunculus acris, lathraea clandestina, rosa blondaeana, arrhenatherum elatius, veronica chamaedrys, ligustrum vulgare, holcus lanatus, ficaria verna, primula veris, rosa canina, sambucus nigra, geum urbanum, viburnum lantana, crataegus laevigata, vicia sepium, hyacinthoides non-scripta, ajuga reptans, viburnum opulus, brachypodium sylvaticum, polygonatum multiflorum, silene dioica, filipendula ulmaria, rumex acetosa, prunus avium, clematis vitalba, euphorbia amygdaloides, fagus sylvatica