be, arr. leuven, quercus robur, quercus rubra, prunus serotina, sorbus aucuparia, lonicera periclymenum, betula pendula, acer pseudoplatanus, castanea sativa, corylus avellana, dryopteris carthusiana, dryopteris dilatata, sambucus nigra, frangula alnus, urtica dioica, teucrium scorodonia, pinus sylvestris, fagus sylvatica, athyrium filix-femina, fraxinus excelsior, glechoma hederacea, hedera helix, juncus effusus, molinia caerulea, betula pubescens, pteridium aquilinum, galeopsis tetrahit, alnus glutinosa, vaccinium myrtillus, polygonatum multiflorum, holcus mollis, avenella flexuosa, moehringia trinervia, deschampsia flexuosa, agrostis capillaris, salix caprea, carpinus betulus, prunus avium, convallaria majalis, anemone nemorosa, carex pilulifera, geum urbanum, holcus lanatus, populus canadensis, ranunculus repens, lamium galeobdolon, dryopteris filix-mas, crataegus monogyna, galium aparine, scrophularia nodosa, ilex aquifolium