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