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