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