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