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