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