be, arr. leuven, urtica dioica, ranunculus repens, poa trivialis, heracleum sphondylium, galium aparine, filipendula ulmaria, populus canadensis, glechoma hederacea, angelica sylvestris, holcus lanatus, quercus robur, alnus glutinosa, sambucus nigra, alopecurus pratensis, fraxinus excelsior, cardamine pratensis, ficaria verna, juncus effusus, phalaris arundinacea, symphytum officinale, silene dioica, rumex obtusifolius, ranunculus acris, cirsium arvense, arrhenatherum elatius, corylus avellana, rumex acetosa, galeopsis tetrahit, geum urbanum, calystegia sepium, humulus lupulus, cirsium palustre, agrostis stolonifera, lolium perenne, lythrum salicaria, crataegus monogyna, stachys sylvatica, dactylis glomerata, acer pseudoplatanus, equisetum palustre, anthriscus sylvestris, iris pseudacorus, ribes rubrum, galanthus nivalis, arum maculatum, persicaria hydropiper, aegopodium podagraria, caltha palustris, carex acuta, silene flos-cuculi