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