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