be, arr. leuven, betula pendula, quercus robur, quercus rubra, castanea sativa, prunus serotina, pinus sylvestris, teucrium scorodonia, sorbus aucuparia, fagus sylvatica, lonicera periclymenum, carex pilulifera, dryopteris carthusiana, frangula alnus, acer pseudoplatanus, pteridium aquilinum, avenella flexuosa, molinia caerulea, agrostis capillaris, deschampsia flexuosa, salix caprea, corylus avellana, dryopteris dilatata, juncus effusus, vaccinium myrtillus, calluna vulgaris, holcus mollis, holcus lanatus, urtica dioica, pinus nigra, juncus conglomeratus, athyrium filix-femina, carpinus betulus, sambucus nigra, cytisus scoparius, ilex aquifolium, hypericum perforatum, betula pubescens, calamagrostis epigejos, glechoma hederacea, cirsium arvense, hedera helix, convallaria majalis, luzula pilosa, moehringia trinervia, fraxinus excelsior, galeopsis tetrahit, populus tremula, robinia pseudoacacia, quercus petraea, dryopteris filix-mas