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