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