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