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