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