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