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