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