nl, oost-zuid-holland, lolium perenne, poa annua, ranunculus repens, agrostis stolonifera, poa trivialis, elymus repens, trifolium repens, cirsium arvense, stellaria media, polygonum aviculare, dactylis glomerata, capsella bursa-pastoris, plantago major, urtica dioica, rumex obtusifolius, persicaria amphibia, holcus lanatus, rumex crispus, matricaria discoidea, phleum pratense, cerastium holosteoides, plantago lanceolata, glechoma hederacea, poa pratensis, phalaris arundinacea, achillea millefolium, ranunculus acris, matricaria chamomilla, senecio vulgaris, argentina anserina, chenopodium album, sonchus oleraceus, equisetum arvense, alopecurus pratensis, arrhenatherum elatius, heracleum sphondylium, bellis perennis, trifolium pratense, rumex acetosa, alopecurus geniculatus, glyceria maxima, phragmites australis, persicaria maculosa, bromus hordeaceus, solanum nigrum, glyceria fluitans, persicaria hydropiper, sonchus asper, anthriscus sylvestris, lamium album