be, arr. leuven, quercus robur, acer pseudoplatanus, fraxinus excelsior, corylus avellana, athyrium filix-femina, lonicera periclymenum, dryopteris carthusiana, sorbus aucuparia, alnus glutinosa, fagus sylvatica, juncus effusus, sambucus nigra, hedera helix, dryopteris dilatata, urtica dioica, betula pendula, circaea lutetiana, anemone nemorosa, quercus rubra, betula pubescens, carpinus betulus, frangula alnus, castanea sativa, prunus serotina, carex remota, glechoma hederacea, polygonatum multiflorum, deschampsia cespitosa, pteridium aquilinum, prunus avium, lamium galeobdolon, geum urbanum, galeopsis tetrahit, crataegus monogyna, lysimachia vulgaris, ficaria verna, dryopteris filix-mas, ajuga reptans, molinia caerulea, filipendula ulmaria, primula elatior, alnus incana, oxalis acetosella, carex sylvatica, angelica sylvestris, scrophularia nodosa, viburnum opulus, populus canadensis, galium aparine, ranunculus repens