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