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