FRQ
  106 LEMNA MINOR L.          1-6
   97 SPIRODELA POLYRRHIZA (L 1-6
   78 LEMNA MINOR L.          3-6
   63 SPIRODELA POLYRRHIZA (L 3-6
   43 LEMNA TRISULCA L.       1-6
   41 AZOLLA FILICULOIDES LAM 1-6

   34 LEMNA GIBBA L.          1-6
   24 SALVINIA NATANS (L.) AL 1-6
   14 CERATOPHYLLUM DEMERSUM  1-6
   13 HYDROCHARIS MORSUS-RANA 1-6
   12 AZOLLA FILICULOIDES LAM 3-6
    7 CALLITRICHE OBTUSANGULA 1-6

    3 LEMNA TRISULCA L.       4-6
    2 LEMNA GIBBA L.          4-6
    2 BUTOMUS UMBELLATUS L.   1-6
    2 HIPPURIS VULGARIS L.    1-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 POTAMOGETON PUSILLUS L. 1-6

    1 POTAMOGETON PECTINATUS  1-6
    1 POTAMOGETON LUCENS L.   1-6
    1 POTAMOGETON FLUITANS RO 1-6
    1 NUPHAR LUTEUM SM.       1-6
    1 CALLITRICHE OBTUSANGULA 3-6