be, arr. leuven, quercus robur, populus canadensis, urtica dioica, glechoma hederacea, ranunculus repens, angelica sylvestris, cirsium arvense, holcus lanatus, poa trivialis, sambucus nigra, filipendula ulmaria, heracleum sphondylium, galium aparine, galeopsis tetrahit, alnus glutinosa, symphytum officinale, fraxinus excelsior, juncus effusus, arrhenatherum elatius, prunus serotina, crataegus monogyna, betula pendula, agrostis capillaris, cirsium palustre, alopecurus pratensis, cardamine pratensis, geum urbanum, acer pseudoplatanus, corylus avellana, quercus rubra, sorbus aucuparia, phragmites australis, lysimachia vulgaris, ribes rubrum, phalaris arundinacea, calystegia sepium, humulus lupulus, stellaria graminea, lonicera periclymenum, rumex acetosa, ranunculus acris, ficaria verna, viburnum opulus, dryopteris carthusiana, lythrum salicaria, lycopus europaeus, dactylis glomerata, iris pseudacorus, moehringia trinervia, frangula alnus