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