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