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