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