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