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