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