be, arr. leuven, populus canadensis, bidens frondosa, quercus rubra, quercus robur, prunus serotina, urtica dioica, filipendula ulmaria, heracleum sphondylium, ranunculus repens, alnus glutinosa, juncus effusus, holcus lanatus, angelica sylvestris, impatiens glandulifera, potentilla indica, poa trivialis, phalaris arundinacea, lysimachia vulgaris, galium aparine, symphytum officinale, lycopus europaeus, amelanchier lamarckii, cardamine pratensis, alopecurus pratensis, galeopsis tetrahit, cirsium palustre, iris pseudacorus, persicaria hydropiper, arrhenatherum elatius, galinsoga quadriradiata, cirsium arvense, glechoma hederacea, lythrum salicaria, sambucus nigra, phragmites australis, alnus incana, epilobium ciliatum, agrostis capillaris, rumex acetosa, humulus lupulus, symphoricarpos albus, tanacetum vulgare, galanthus nivalis, galium palustre, juncus tenuis, calystegia sepium, sorbus aucuparia, silene coronaria, rumex obtusifolius, carex acuta