be, arr. leuven, quercus robur, holcus lanatus, populus canadensis, ranunculus repens, urtica dioica, arrhenatherum elatius, agrostis capillaris, rumex acetosa, heracleum sphondylium, filipendula ulmaria, angelica sylvestris, poa trivialis, cirsium arvense, alopecurus pratensis, prunus serotina, galium aparine, juncus effusus, glechoma hederacea, galeopsis tetrahit, alnus glutinosa, ranunculus acris, stellaria graminea, cirsium palustre, phalaris arundinacea, quercus rubra, symphytum officinale, cardamine pratensis, holcus mollis, lysimachia vulgaris, anthoxanthum odoratum, sambucus nigra, tanacetum vulgare, fraxinus excelsior, festuca rubra, betula pendula, plantago lanceolata, sorbus aucuparia, cerastium fontanum, dactylis glomerata, phragmites australis, lonicera periclymenum, equisetum palustre, lolium perenne, calystegia sepium, silene flos-cuculi, equisetum arvense, lythrum salicaria, achillea millefolium, iris pseudacorus, rumex obtusifolius