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