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