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