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