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