be, arr. leuven, quercus robur, urtica dioica, populus canadensis, glechoma hederacea, fraxinus excelsior, galium aparine, heracleum sphondylium, ranunculus repens, sambucus nigra, poa trivialis, holcus lanatus, alnus glutinosa, corylus avellana, cirsium arvense, crataegus monogyna, angelica sylvestris, galeopsis tetrahit, filipendula ulmaria, arrhenatherum elatius, acer pseudoplatanus, symphytum officinale, lonicera periclymenum, phalaris arundinacea, silene dioica, calystegia sepium, humulus lupulus, geum urbanum, juncus effusus, alopecurus pratensis, betula pendula, hedera helix, ribes rubrum, sorbus aucuparia, dactylis glomerata, quercus rubra, prunus serotina, agrostis capillaris, ficaria verna, phragmites australis, holcus mollis, agrostis stolonifera, prunus avium, ranunculus acris, stachys sylvatica, rumex obtusifolius, polygonatum multiflorum, anthriscus sylvestris, cirsium palustre, iris pseudacorus, frangula alnus