be, arr. tongeren, quercus robur, sorbus aucuparia, quercus rubra, frangula alnus, lonicera periclymenum, betula pendula, prunus serotina, pinus sylvestris, avenella flexuosa, deschampsia flexuosa, betula pubescens, fagus sylvatica, dryopteris carthusiana, molinia caerulea, dryopteris dilatata, vaccinium myrtillus, ilex aquifolium, castanea sativa, pteridium aquilinum, ceratocapnos claviculata, amelanchier lamarckii, carex pilulifera, calluna vulgaris, hedera helix, corylus avellana, pseudotsuga menziesii, holcus mollis, teucrium scorodonia, polygonatum multiflorum, agrostis capillaris, acer pseudoplatanus, populus tremula, larix kaempferi, quercus petraea, galeopsis tetrahit, sambucus nigra, maianthemum bifolium, juncus effusus, melampyrum pratense, luzula pilosa, picea abies, convallaria majalis, carpinus betulus, prunus avium, rhododendron ponticum, oxalis acetosella, rubus idaeus, moehringia trinervia, holcus lanatus, alnus glutinosa