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