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