FRQ
  206 LEMNA MINOR L.          1-6
  178 SPIRODELA POLYRRHIZA (L 1-6
  139 LEMNA MINOR L.          3-6
  108 SPIRODELA POLYRRHIZA (L 3-6
  104 CERATOPHYLLUM DEMERSUM  1-6
   86 LEMNA GIBBA L.          1-6
   78 LEMNA TRISULCA L.       1-6
   75 AZOLLA FILICULOIDES LAM 1-6
   35 CERATOPHYLLUM DEMERSUM  4-6
   27 SALVINIA NATANS (L.) AL 1-6
   27 MYRIOPHYLLUM SPICATUM L 1-6
   22 AZOLLA FILICULOIDES LAM 3-6

   19 CALLITRICHE OBTUSANGULA 1-6
   18 LEMNA GIBBA L.          4-6
   16 HELODEA CANADENSIS RICH 1-6
   15 HYDROCHARIS MORSUS-RANA 1-6
   13 POTAMOGETON PECTINATUS  1-6
    9 POTAMOGETON PUSILLUS L. 1-6
    9 LEMNA TRISULCA L.       4-6
    9 NUPHAR LUTEUM SM.       1-6
    8 POTAMOGETON CRISPUS L.  1-6
    7 POTAMOGETON LUCENS L.   1-6
    6 POTAMOGETON PERFOLIATUS 1-6
    6 RANUNCULUS FLUITANS LAM 1-6

    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 MYRIOPHYLLUM VERTICILLA 1-6
    2 SPARGANIUM SIMPLEX HUDS 1-6
    2 NAIAS MAJOR ALL.        1-6
    2 WOLFFIA ARRHIZA (L.) WI 1-6
    2 BUTOMUS UMBELLATUS L.   1-6
    2 UTRICULARIA VULGARIS L. 1-6

    2 HIPPURIS VULGARIS L.    1-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 POTAMOGETON PUSILLUS L. 3-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON LUCENS L.   4-6
    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