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