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