be, arr. leuven, quercus robur, corylus avellana, acer pseudoplatanus, lonicera periclymenum, sorbus aucuparia, fraxinus excelsior, quercus rubra, prunus serotina, sambucus nigra, polygonatum multiflorum, anemone nemorosa, athyrium filix-femina, hedera helix, alnus glutinosa, castanea sativa, fagus sylvatica, betula pendula, urtica dioica, carpinus betulus, dryopteris carthusiana, glechoma hederacea, prunus avium, frangula alnus, populus canadensis, adoxa moschatellina, lamium galeobdolon, ficaria verna, geum urbanum, dryopteris dilatata, galeopsis tetrahit, moehringia trinervia, crataegus monogyna, primula elatior, betula pubescens, viburnum opulus, galium aparine, ribes rubrum, circaea lutetiana, convallaria majalis, juncus effusus, maianthemum bifolium, angelica sylvestris, pteridium aquilinum, arum maculatum, teucrium scorodonia, filipendula ulmaria, silene dioica, holcus mollis, luzula pilosa, ranunculus repens