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