be, arr. halle-vilvoorde, quercus robur, acer pseudoplatanus, corylus avellana, fraxinus excelsior, lonicera periclymenum, sorbus aucuparia, polygonatum multiflorum, sambucus nigra, hedera helix, fagus sylvatica, urtica dioica, glechoma hederacea, anemone nemorosa, carpinus betulus, dryopteris carthusiana, athyrium filix-femina, alnus glutinosa, geum urbanum, betula pendula, prunus avium, arum maculatum, crataegus monogyna, ficaria verna, lamium galeobdolon, prunus serotina, circaea lutetiana, adoxa moschatellina, quercus rubra, castanea sativa, primula elatior, silene dioica, dryopteris dilatata, betula pubescens, ribes rubrum, galium aparine, hyacinthoides non-scripta, galeopsis tetrahit, deschampsia cespitosa, frangula alnus, convallaria majalis, moehringia trinervia, poa trivialis, dryopteris filix-mas, populus canadensis, angelica sylvestris, viburnum opulus, milium effusum, juncus effusus, filipendula ulmaria, holcus mollis