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