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