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