text: persicaria hydropiper, poa annua, stellaria media, arnoseris minima, atriplex patula, capsella bursa-pastoris, impatiens noli-tangere, lapsana communis, lipandra polysperma, rorippa palustris, urtica dioica, aethusa cynapium, chenopodium album, galinsoga parviflora, gnaphalium uliginosum, impatiens parviflora, lolium perenne, matricaria discoidea, myosotis scorpioides, persicaria lapathifolia, phalaris canariensis, plantago major, poa palustris, polygonum aviculare, ranunculus repens, rumex obtusifolius, sisymbrium officinale, sonchus oleraceus, stellaria alsine, stellaria nemorum