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