be, arr. tongeren, castanea sativa, quercus robur, lonicera periclymenum, quercus rubra, prunus serotina, sorbus aucuparia, corylus avellana, betula pendula, frangula alnus, fagus sylvatica, betula pubescens, ilex aquifolium, hedera helix, pinus sylvestris, pteridium aquilinum, rhododendron ponticum, hyacinthoides non-scripta, polygonatum multiflorum, molinia caerulea, dryopteris dilatata, dryopteris carthusiana, acer pseudoplatanus, teucrium scorodonia, vaccinium myrtillus, avenella flexuosa, deschampsia flexuosa, amelanchier lamarckii, fraxinus excelsior, carpinus betulus, mespilus germanica, lamium galeobdolon, prunus avium, populus tremula, carex pilulifera, anemone nemorosa, crataegus monogyna, sambucus nigra, plantago subulata, convallaria majalis, robinia pseudoacacia, quercus petraea, alnus glutinosa, calluna vulgaris, arum maculatum, athyrium filix-femina, holcus mollis, maianthemum bifolium, ceratocapnos claviculata, luzula pilosa, dryopteris filix-mas