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