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