be, arr. nivelles, castanea sativa, quercus rubra, quercus robur, prunus serotina, sorbus aucuparia, fagus sylvatica, betula pendula, pinus sylvestris, lonicera periclymenum, vaccinium myrtillus, frangula alnus, acer pseudoplatanus, dryopteris dilatata, carex pilulifera, dryopteris carthusiana, avenella flexuosa, pteridium aquilinum, molinia caerulea, deschampsia flexuosa, teucrium scorodonia, corylus avellana, ilex aquifolium, athyrium filix-femina, pinus nigra, calluna vulgaris, hedera helix, betula pubescens, convallaria majalis, quercus petraea, luzula pilosa, sambucus nigra, robinia pseudoacacia, carpinus betulus, juncus effusus, polygonatum multiflorum, prunus avium, holcus mollis, picea abies, salix caprea, pseudotsuga menziesii, larix decidua, agrostis capillaris, maianthemum bifolium, fraxinus excelsior, anemone nemorosa, dryopteris filix-mas, larix kaempferi, lamium galeobdolon, populus tremula, amelanchier lamarckii