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