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