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