nl, agglomeratie leiden en bollenstreek, poa trivialis, agrostis stolonifera, ranunculus repens, phalaris arundinacea, holcus lanatus, glyceria fluitans, glyceria maxima, lolium perenne, elymus repens, rumex acetosa, stellaria media, persicaria amphibia, trifolium repens, alopecurus geniculatus, phragmites australis, alopecurus pratensis, ranunculus acris, cardamine pratensis, spirodela polyrhiza, glechoma hederacea, urtica dioica, sparganium erectum, dactylis glomerata, elodea nuttallii, lemna trisulca, cirsium arvense, cerastium holosteoides, myosotis scorpioides, galium palustre, poa annua, ranunculus sceleratus, persicaria hydropiper, juncus effusus, rorippa amphibia, equisetum fluviatile, phleum pratense, ceratophyllum demersum, rumex obtusifolius, butomus umbellatus, eleocharis palustris, iris pseudacorus, lemna gibba, epilobium hirsutum, oenanthe fistulosa, bellis perennis, polygonum aviculare, juncus articulatus, berula erecta, poa pratensis, carex riparia