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