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