nl, oost-zuid-holland, ranunculus repens, agrostis stolonifera, poa trivialis, trifolium repens, lolium perenne, poa annua, stellaria media, elymus repens, alopecurus geniculatus, holcus lanatus, glyceria fluitans, ranunculus acris, alopecurus pratensis, phleum pratense, dactylis glomerata, phalaris arundinacea, capsella bursa-pastoris, rumex acetosa, polygonum aviculare, persicaria hydropiper, glyceria maxima, persicaria amphibia, poa pratensis, cerastium holosteoides, cirsium arvense, glechoma hederacea, plantago major, cardamine pratensis, ranunculus sceleratus, bellis perennis, argentina anserina, rumex obtusifolius, myosotis scorpioides, bromus hordeaceus, spirodela polyrhiza, juncus articulatus, rorippa amphibia, lolium pratense, eleocharis palustris, rumex crispus, agrostis capillaris, urtica dioica, lemna trisulca, sparganium erectum, elodea nuttallii, equisetum fluviatile, carex hirta, galium palustre, scorzoneroides autumnalis, festuca rubra