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