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