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