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