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