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