FRQ
  244 LEMNA MINOR L.          1-6
  208 SPIRODELA POLYRRHIZA (L 1-6
  164 LEMNA MINOR L.          3-6
  125 SPIRODELA POLYRRHIZA (L 3-6
  121 LEMNA GIBBA L.          1-6
  120 CERATOPHYLLUM DEMERSUM  1-6
   99 LEMNA TRISULCA L.       1-6
   89 AZOLLA FILICULOIDES LAM 1-6
   41 CERATOPHYLLUM DEMERSUM  4-6
   38 LEMNA GIBBA L.          4-6
   34 AZOLLA FILICULOIDES LAM 3-6
   34 MYRIOPHYLLUM SPICATUM L 1-6
   30 WOLFFIA ARRHIZA (L.) WI 1-6
   27 SALVINIA NATANS (L.) AL 1-6

   25 LEMNA TRISULCA L.       4-6
   24 HYDROCHARIS MORSUS-RANA 1-6
   22 HELODEA CANADENSIS RICH 1-6
   22 CALLITRICHE OBTUSANGULA 1-6
   16 POTAMOGETON PECTINATUS  1-6
    9 POTAMOGETON PUSILLUS L. 1-6
    9 POTAMOGETON CRISPUS L.  1-6
    9 NUPHAR LUTEUM SM.       1-6
    8 POTAMOGETON LUCENS L.   1-6
    8 BUTOMUS UMBELLATUS L.   1-6
    7 POTAMOGETON PERFOLIATUS 1-6
    7 RANUNCULUS FLUITANS LAM 1-6
    6 WOLFFIA ARRHIZA (L.) WI 5-6
    5 RANUNCULUS CIRCINATUS S 1-6

    5 NUPHAR LUTEUM SM.       4-6
    4 POTAMOGETON TRICHOIDES  1-6
    4 SAGITTARIA SAGITTIFOLIA 1-6
    3 POTAMOGETON PECTINATUS  4-6
    3 POTAMOGETON FLUITANS RO 1-6
    3 NAIAS MAJOR ALL.        1-6
    3 MYRIOPHYLLUM VERTICILLA 1-6
    2 SPARGANIUM SIMPLEX HUDS 1-6
    2 BUTOMUS UMBELLATUS L.   3-6
    2 UTRICULARIA VULGARIS L. 1-6
    2 HIPPURIS VULGARIS L.    1-6
    2 MYRIOPHYLLUM SPICATUM L 4-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 POTAMOGETON PUSILLUS L. 3-6

    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON LUCENS L.   4-6
    1 VALLISNERIA SPIRALIS L. 1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 ACORUS CALAMUS L.       1-6
    1 RANUNCULUS TRICHOPHYLLU 1-6
    1 RANUNCULUS TRICHOPHYLLU 3-6
    1 RANUNCULUS CIRCINATUS S 3-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 CALLITRICHE OBTUSANGULA 3-6