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