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