nl, oost-zuid-holland, lolium perenne, ranunculus repens, poa annua, trifolium repens, poa trivialis, stellaria media, agrostis stolonifera, holcus lanatus, elymus repens, alopecurus geniculatus, ranunculus acris, persicaria hydropiper, polygonum aviculare, dactylis glomerata, glyceria fluitans, phalaris arundinacea, alopecurus pratensis, phleum pratense, rumex acetosa, capsella bursa-pastoris, rumex obtusifolius, cerastium holosteoides, plantago major, glechoma hederacea, cirsium arvense, poa pratensis, cardamine pratensis, persicaria amphibia, glyceria maxima, juncus articulatus, myosotis scorpioides, bellis perennis, bromus hordeaceus, rorippa amphibia, ranunculus sceleratus, stellaria alsine, argentina anserina, rumex crispus, urtica dioica, galium palustre, sagina procumbens, lolium pratense, juncus effusus, oenanthe fistulosa, sparganium erectum, agrostis capillaris, spirodela polyrhiza, ranunculus flammula, matricaria discoidea, deschampsia cespitosa