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