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