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