be, arr. tongeren, pinus sylvestris, quercus robur, prunus serotina, quercus rubra, sorbus aucuparia, betula pendula, avenella flexuosa, deschampsia flexuosa, frangula alnus, vaccinium myrtillus, dryopteris dilatata, dryopteris carthusiana, fagus sylvatica, molinia caerulea, calluna vulgaris, amelanchier lamarckii, pseudotsuga menziesii, castanea sativa, carex pilulifera, lonicera periclymenum, pinus nigra, agrostis capillaris, ceratocapnos claviculata, betula pubescens, ilex aquifolium, rumex angiocarpus, picea abies, pteridium aquilinum, rumex acetosella, galium saxatile, teucrium scorodonia, larix kaempferi, holcus mollis, galeopsis tetrahit, quercus petraea, robinia pseudoacacia, pinus strobus, acer pseudoplatanus, holcus lanatus, erica tetralix, cytisus scoparius, impatiens parviflora, agrostis vinealis, rubus idaeus, rhododendron ponticum, juncus effusus, rubus plicatus, corylus avellana, juncus tenuis, festuca filiformis