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