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