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