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