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