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