nl, agglomeratie leiden en bollenstreek, lolium perenne, ranunculus repens, trifolium repens, poa trivialis, stellaria media, agrostis stolonifera, holcus lanatus, poa annua, ranunculus acris, alopecurus pratensis, rumex acetosa, dactylis glomerata, elymus repens, alopecurus geniculatus, phalaris arundinacea, phleum pratense, glyceria fluitans, glechoma hederacea, persicaria amphibia, cerastium holosteoides, cardamine pratensis, capsella bursa-pastoris, poa pratensis, polygonum aviculare, bellis perennis, bromus hordeaceus, cirsium arvense, persicaria hydropiper, glyceria maxima, rumex obtusifolius, plantago major, lolium pratense, myosotis scorpioides, rorippa amphibia, juncus articulatus, rumex crispus, festuca rubra, ranunculus sceleratus, argentina anserina, galium palustre, oenanthe fistulosa, anthoxanthum odoratum, juncus effusus, urtica dioica, agrostis capillaris, trifolium pratense, spirodela polyrhiza, deschampsia cespitosa, stellaria alsine, ranunculus flammula