be, arr. leuven, quercus robur, sorbus aucuparia, quercus rubra, prunus serotina, lonicera periclymenum, betula pendula, frangula alnus, corylus avellana, sambucus nigra, dryopteris dilatata, castanea sativa, agrostis capillaris, pinus sylvestris, holcus mollis, holcus lanatus, acer pseudoplatanus, urtica dioica, dryopteris carthusiana, betula pubescens, polygonatum multiflorum, galeopsis tetrahit, deschampsia flexuosa, avenella flexuosa, amelanchier lamarckii, teucrium scorodonia, populus canadensis, fagus sylvatica, ranunculus repens, molinia caerulea, alnus glutinosa, hedera helix, fraxinus excelsior, glechoma hederacea, juncus effusus, galium aparine, vaccinium myrtillus, prunus avium, poa trivialis, moehringia trinervia, crataegus monogyna, pteridium aquilinum, athyrium filix-femina, populus tremula, salix caprea, robinia pseudoacacia, calluna vulgaris, heracleum sphondylium, angelica sylvestris, carex pilulifera, geum urbanum