nl, oost-zuid-holland, agrostis stolonifera, poa trivialis, ranunculus repens, elymus repens, lolium perenne, trifolium repens, dactylis glomerata, holcus lanatus, persicaria amphibia, ranunculus acris, glyceria maxima, cirsium arvense, rumex acetosa, urtica dioica, alopecurus pratensis, stellaria media, phalaris arundinacea, poa annua, elodea nuttallii, glechoma hederacea, cerastium holosteoides, phragmites australis, phleum pratense, glyceria fluitans, spirodela polyrhiza, alopecurus geniculatus, plantago major, poa pratensis, stuckenia pectinata, polygonum aviculare, anthriscus sylvestris, rumex obtusifolius, capsella bursa-pastoris, butomus umbellatus, heracleum sphondylium, cardamine pratensis, bellis perennis, plantago lanceolata, lemna gibba, ceratophyllum demersum, festuca rubra, lemna trisulca, argentina anserina, achillea millefolium, potamogeton pusillus, sparganium erectum, trifolium pratense, lamium album, scorzoneroides autumnalis, rumex crispus