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