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