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