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