nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, ranunculus repens, trifolium repens, holcus lanatus, poa trivialis, lolium perenne, glyceria fluitans, alopecurus geniculatus, rumex acetosa, persicaria amphibia, eleocharis palustris, ranunculus acris, cardamine pratensis, oenanthe fistulosa, juncus articulatus, anthoxanthum odoratum, cerastium holosteoides, phalaris arundinacea, galium palustre, juncus effusus, alopecurus pratensis, elymus repens, ranunculus flammula, poa annua, bellis perennis, phleum pratense, stellaria media, glyceria maxima, lolium pratense, argentina anserina, bromus hordeaceus, myosotis scorpioides, ranunculus sceleratus, poa pratensis, scorzoneroides autumnalis, triglochin palustris, plantago major, phragmites australis, persicaria hydropiper, cirsium arvense, carex hirta, carex nigra, cynosurus cristatus, bolboschoenus maritimus, rumex crispus, dactylis glomerata, silene flos-cuculi, lemna trisulca, agrostis capillaris, equisetum fluviatile