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