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