be, arr. leuven, quercus robur, populus canadensis, fraxinus excelsior, urtica dioica, acer pseudoplatanus, corylus avellana, sambucus nigra, quercus rubra, glechoma hederacea, sorbus aucuparia, prunus serotina, lonicera periclymenum, alnus glutinosa, ranunculus repens, heracleum sphondylium, athyrium filix-femina, galium aparine, poa trivialis, hedera helix, angelica sylvestris, juncus effusus, polygonatum multiflorum, castanea sativa, galeopsis tetrahit, betula pendula, geum urbanum, holcus lanatus, ficaria verna, ribes rubrum, dryopteris dilatata, filipendula ulmaria, anemone nemorosa, prunus avium, crataegus monogyna, alnus incana, dryopteris carthusiana, fagus sylvatica, silene dioica, frangula alnus, lamium galeobdolon, cardamine pratensis, moehringia trinervia, humulus lupulus, viburnum opulus, primula elatior, cirsium arvense, agrostis capillaris, stachys sylvatica, circaea lutetiana, salix caprea