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