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