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