be, arr. leuven, quercus robur, castanea sativa, quercus rubra, acer pseudoplatanus, prunus serotina, lonicera periclymenum, sorbus aucuparia, corylus avellana, sambucus nigra, fagus sylvatica, dryopteris dilatata, fraxinus excelsior, betula pendula, athyrium filix-femina, dryopteris carthusiana, hedera helix, urtica dioica, teucrium scorodonia, polygonatum multiflorum, glechoma hederacea, frangula alnus, alnus glutinosa, juncus effusus, populus canadensis, lamium galeobdolon, prunus avium, anemone nemorosa, pteridium aquilinum, betula pubescens, pinus sylvestris, hyacinthoides non-scripta, carpinus betulus, vaccinium myrtillus, geum urbanum, salix caprea, carex pilulifera, molinia caerulea, ilex aquifolium, circaea lutetiana, convallaria majalis, crataegus monogyna, ranunculus repens, arum maculatum, dryopteris filix-mas, avenella flexuosa, holcus mollis, ribes rubrum, deschampsia flexuosa, primula elatior, robinia pseudoacacia