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