2010.07.30 Vienna XXII. (Hausgraben - bayou 153 m AMSL).Put on a stem of grass to make it easier to shoot details; here underside, with root.German name: Klein-Wasserlinse
2010.07.30 Vienna XXII. (Hausgraben - bayou 153 m AMSL).Put on a stem of grass to make it easier to shoot details; here from the side, with root.German name: Klein-Wasserlinse
2010.07.30 Vienna XXII. (Hausgraben - bayou 153 m AMSL).Put on a stem of grass to make it easier to shoot details; here top side.German name: Klein-Wasserlinse
2010.07.30 Vienna XXII. (Hausgraben - bayou 153 m AMSL).This was most likely the first aquatic species migrating to the new Hausgraben habitat, I already saw them in huge numbers in 2008, shortly after the stream was flooded for the first time.German name: Klein-Wasserlinse (with Ocker-Fuchsschwanzgras)
Lesser duckweed (Lemna minor). Found in ponds, lakes, and stagnant waters throughout North America below 58 deg. N..lat. Also in Europe (After Britton & Brown)