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