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