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