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