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