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