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