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