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