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