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