be, arr. leuven, populus canadensis, angelica sylvestris, filipendula ulmaria, heracleum sphondylium, alopecurus pratensis, arrhenatherum elatius, urtica dioica, ranunculus repens, holcus lanatus, cirsium arvense, poa trivialis, symphytum officinale, quercus robur, glechoma hederacea, galium aparine, rumex acetosa, galeopsis tetrahit, phalaris arundinacea, ranunculus acris, cirsium palustre, stellaria graminea, juncus effusus, carex acuta, alnus glutinosa, calystegia sepium, phragmites australis, agrostis capillaris, cardamine pratensis, lathyrus pratensis, equisetum palustre, iris pseudacorus, lythrum salicaria, silene flos-cuculi, sambucus nigra, vicia cracca, dactylis glomerata, lysimachia vulgaris, crataegus monogyna, cerastium fontanum, ficaria verna, fraxinus excelsior, carex acutiformis, lolium perenne, persicaria amphibia, rumex obtusifolius, anthoxanthum odoratum, festuca rubra, plantago lanceolata, cerastium holosteoides, tanacetum vulgare