be, arr. tongeren, prunus serotina, quercus robur, pinus sylvestris, sorbus aucuparia, avenella flexuosa, quercus rubra, betula pendula, deschampsia flexuosa, vaccinium myrtillus, frangula alnus, dryopteris dilatata, dryopteris carthusiana, fagus sylvatica, amelanchier lamarckii, ceratocapnos claviculata, pseudotsuga menziesii, lonicera periclymenum, molinia caerulea, calluna vulgaris, ilex aquifolium, betula pubescens, castanea sativa, carex pilulifera, pinus nigra, agrostis capillaris, picea abies, galium saxatile, pteridium aquilinum, larix kaempferi, rumex angiocarpus, rumex acetosella, quercus petraea, galeopsis tetrahit, holcus mollis, acer pseudoplatanus, rubus idaeus, teucrium scorodonia, vaccinium vitis-idaea, melampyrum pratense, rhododendron ponticum, impatiens parviflora, maianthemum bifolium, digitalis purpurea, moehringia trinervia, pinus strobus, corylus avellana, claytonia sibirica, rubus gratus, sambucus nigra, erica tetralix