nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, ranunculus repens, poa trivialis, glyceria fluitans, trifolium repens, elodea nuttallii, lolium perenne, glyceria maxima, spirodela polyrhiza, alopecurus geniculatus, lemna trisulca, ceratophyllum demersum, persicaria amphibia, elymus repens, stuckenia pectinata, ranunculus sceleratus, holcus lanatus, poa annua, phalaris arundinacea, sparganium erectum, eleocharis palustris, butomus umbellatus, stellaria media, phragmites australis, potamogeton pusillus, ranunculus circinatus, lemna gibba, bolboschoenus maritimus, ranunculus acris, cirsium arvense, cerastium holosteoides, polygonum aviculare, myosotis scorpioides, persicaria hydropiper, rumex acetosa, argentina anserina, lemna minor, cardamine pratensis, dactylis glomerata, phleum pratense, equisetum fluviatile, plantago major, alopecurus pratensis, zannichellia palustris, myriophyllum spicatum, urtica dioica, juncus articulatus, poa pratensis, bellis perennis, oenanthe fistulosa