be, arr. leuven, populus canadensis, heracleum sphondylium, quercus robur, urtica dioica, angelica sylvestris, arrhenatherum elatius, filipendula ulmaria, glechoma hederacea, symphytum officinale, cirsium arvense, galium aparine, ranunculus repens, alopecurus pratensis, poa trivialis, fraxinus excelsior, holcus lanatus, sambucus nigra, crataegus monogyna, calystegia sepium, galeopsis tetrahit, alnus glutinosa, phalaris arundinacea, phragmites australis, ficaria verna, ranunculus acris, rumex acetosa, ribes rubrum, humulus lupulus, dactylis glomerata, corylus avellana, lythrum salicaria, anthriscus sylvestris, cardamine pratensis, geum urbanum, cirsium palustre, iris pseudacorus, lathyrus pratensis, carex acuta, agrostis capillaris, stellaria graminea, equisetum arvense, tanacetum vulgare, vicia cracca, rumex obtusifolius, acer pseudoplatanus, juncus effusus, prunus serotina, viburnum opulus, aegopodium podagraria, lysimachia vulgaris