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