be, arr. leuven, quercus robur, quercus rubra, prunus serotina, sorbus aucuparia, frangula alnus, betula pendula, amelanchier lamarckii, lonicera periclymenum, pinus sylvestris, agrostis capillaris, castanea sativa, holcus lanatus, corylus avellana, avenella flexuosa, sambucus nigra, holcus mollis, deschampsia flexuosa, urtica dioica, dryopteris dilatata, molinia caerulea, galeopsis tetrahit, dryopteris carthusiana, robinia pseudoacacia, alnus glutinosa, betula pubescens, ranunculus repens, fagus sylvatica, acer pseudoplatanus, juncus effusus, vaccinium myrtillus, polygonatum multiflorum, galium aparine, teucrium scorodonia, populus canadensis, calluna vulgaris, poa trivialis, arrhenatherum elatius, prunus padus, fraxinus excelsior, glechoma hederacea, pteridium aquilinum, hedera helix, prunus avium, populus tremula, juncus tenuis, silene coronaria, heracleum sphondylium, rumex acetosa, cytisus scoparius, rumex angiocarpus