be, arr. leuven, populus canadensis, quercus robur, urtica dioica, fraxinus excelsior, corylus avellana, alnus glutinosa, sambucus nigra, glechoma hederacea, filipendula ulmaria, angelica sylvestris, acer pseudoplatanus, heracleum sphondylium, galium aparine, quercus rubra, ranunculus repens, ficaria verna, athyrium filix-femina, prunus serotina, lonicera periclymenum, ribes rubrum, sorbus aucuparia, anemone nemorosa, poa trivialis, alnus incana, geum urbanum, galeopsis tetrahit, primula elatior, juncus effusus, humulus lupulus, polygonatum multiflorum, silene dioica, cardamine pratensis, viburnum opulus, crataegus monogyna, hedera helix, symphytum officinale, prunus avium, circaea lutetiana, cirsium palustre, holcus lanatus, adoxa moschatellina, lamium galeobdolon, stachys sylvatica, phalaris arundinacea, dryopteris carthusiana, castanea sativa, betula pendula, arum maculatum, dryopteris dilatata, carex remota