FRQ
   32 POTAMOGETON NATANS L.   1-6
   30 POTAMOGETON NATANS L.   4-6
   19 RANUNCULUS AQUATILIS L. 1-6
   10 RANUNCULUS AQUATILIS L. 4-6
    7 SAGITTARIA SAGITTIFOLIA 1-6
    6 LEMNA MINOR L.          1-6

    6 HOTTONIA PALUSTRIS L.   1-6
    6 NUPHAR LUTEUM SM.       1-6
    3 SAGITTARIA SAGITTIFOLIA 3-6
    2 LEMNA MINOR L.          3-6
    2 HOTTONIA PALUSTRIS L.   3-6
    2 NYMPHAEA ALBA L.        1-6

    2 CALLITRICHE HAMULATA KU 1-6
    1 SPARGANIUM SIMPLEX HUDS 1-6
    1 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON CRISPUS L.  1-6
    1 HELODEA CANADENSIS RICH 1-6
    1 TRAPA NATANS L.         1-6

    1 RANUNCULUS FLUITANS LAM 1-6
    1 NUPHAR LUTEUM SM.       4-6
    1 UTRICULARIA MAJOR SCHMI 1-6
    1 MYRIOPHYLLUM ALTERNIFLO 1-6