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