56 CALLITRICHE OBTUSANGULA 1-6
   52 SIUM ERECTUM HUDSON     1-6
   38 CALLITRICHE OBTUSANGULA 3-6
   38 SIUM ERECTUM HUDSON     3-6
   25 LEMNA TRISULCA L.       1-6
   23 VERONICA ANAGALLIS L.   1-5
   23 SPARGANIUM SIMPLEX HUDS 1-6
   22 SIUM ERECTUM HUDSON     4-6
   16 HELODEA CANADENSIS RICH 1-6
   16 LEMNA MINOR L.          1-6
   13 NUPHAR LUTEUM SM.       1-6
   13 LEMNA TRISULCA L.       3-6
   12 POTAMOGETON PECTINATUS  1-6
   11 NASTURTIUM OFFICINALE R 1-6

   11 VERONICA ANAGALLIS L.   2-5
    8 VERO ANAG SUBS AQUATICA 1-5
    8 POTAMOGETON COLORATUS V 1-6
    7 LEMNA TRISULCA L.       4-6
    7 POTAMOGETON CRISPUS L.  1-6
    6 NASTURTIUM OFFICINALE R 3-6
    5 CERATOPHYLLUM DEMERSUM  1-6
    5 MYRIOPHYLLUM SPICATUM L 1-6
    5 LEMNA GIBBA L.          1-6
    5 SPARGANIUM SIMPLEX HUDS 3-6
    4 MYRIOPHYLLUM VERTICILLA 1-6
    4 RANUNCULUS FLUITANS LAM 1-6
    4 POTAMOGETON CRISPUS L.  2-6
    4 POTAMOGETON MUCRONATUS  1-5

    4 ZANNICHELLIA PALUSTRIS  1-6
    3 HIPPURIS VULGARIS L.    1-6
    3 GLYCERIA FLUITANS (L.)  1-6
    3 SPIRODELA POLYRRHIZA (L 1-6
    3 POTAMOGETON PERFOLIATUS 1-6
    2 HOTTONIA PALUSTRIS L.   1-6
    2 RANUNCULUS CIRCINATUS S 1-6
    2 VERO ANAG SUBS AQUATICA 2-5
    2 GLYCERIA ALTISSIMA (MOE 1-6
    2 LEMNA MINOR L.          3-6
    2 POTAMOGETON CRISPUS L.  3-6
    2 AZOLLA FILICULOIDES LAM 1-6
    1 UTRICULARIA VULGARIS L. 1-6
    1 RANUNCULUS CIRCINATUS S 3-6

    1 RANUNCULUS TRICHOPHYLLU 1-6
    1 OENANTHE PHELLANDRIUM ( 1-6
    1 ALISMA PLANTAGO L.      1-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 SCIRPUS LACUSTRIS L.    1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 POTAMOGETON MUCRONATUS  3-5
    1 POTAMOGETON NATANS L.   1-6
    1 POTAMOGETON PECTINATUS  4-6
    1 POTAMOGETON PUSILLUS L. 1-6
    1 SPARGANIUM RAMOSUM CURT 1-6