be, arr. leuven, quercus robur, populus canadensis, urtica dioica, holcus lanatus, prunus serotina, cirsium arvense, arrhenatherum elatius, ranunculus repens, glechoma hederacea, agrostis capillaris, quercus rubra, betula pendula, heracleum sphondylium, poa trivialis, sambucus nigra, galium aparine, galeopsis tetrahit, alnus glutinosa, angelica sylvestris, fraxinus excelsior, symphytum officinale, juncus effusus, tanacetum vulgare, stellaria graminea, acer pseudoplatanus, hypericum perforatum, alopecurus pratensis, rumex acetosa, crataegus monogyna, sorbus aucuparia, dactylis glomerata, equisetum arvense, festuca rubra, corylus avellana, ranunculus acris, holcus mollis, calystegia sepium, filipendula ulmaria, phragmites australis, lonicera periclymenum, geum urbanum, elymus repens, cerastium fontanum, achillea millefolium, lolium perenne, cirsium palustre, phalaris arundinacea, rumex obtusifolius, salix caprea, cerastium holosteoides