be, arr. leuven, castanea sativa, quercus rubra, quercus robur, prunus serotina, betula pendula, sorbus aucuparia, lonicera periclymenum, frangula alnus, pinus sylvestris, vaccinium myrtillus, avenella flexuosa, deschampsia flexuosa, teucrium scorodonia, molinia caerulea, dryopteris dilatata, fagus sylvatica, calluna vulgaris, carex pilulifera, pteridium aquilinum, dryopteris carthusiana, robinia pseudoacacia, corylus avellana, betula pubescens, acer pseudoplatanus, ilex aquifolium, amelanchier lamarckii, agrostis capillaris, pinus nigra, holcus mollis, hedera helix, sambucus nigra, cytisus scoparius, polygonatum multiflorum, prunus avium, salix caprea, rhododendron ponticum, populus tremula, pseudotsuga menziesii, quercus petraea, convallaria majalis, athyrium filix-femina, juncus effusus, rumex angiocarpus, luzula pilosa, holcus lanatus, maianthemum bifolium, rumex acetosella, pinus pinaster, carpinus betulus, silene coronaria