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