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