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