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