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