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