45 SIUM ERECTUM HUDSON     1-6
   38 CALLITRICHE OBTUSANGULA 1-6
   35 SIUM ERECTUM HUDSON     3-6
   25 CALLITRICHE OBTUSANGULA 3-6
   25 LEMNA TRISULCA L.       1-6
   19 SIUM ERECTUM HUDSON     4-6
   18 SPARGANIUM SIMPLEX HUDS 1-6
   15 HELODEA CANADENSIS RICH 1-6
   13 LEMNA TRISULCA L.       3-6
   12 LEMNA MINOR L.          1-6
   11 NUPHAR LUTEUM SM.       1-6

    7 LEMNA TRISULCA L.       4-6
    7 POTAMOGETON COLORATUS V 1-6
    6 NASTURTIUM OFFICINALE R 1-6
    4 POTAMOGETON MUCRONATUS  1-5
    3 NASTURTIUM OFFICINALE R 3-6
    3 GLYCERIA FLUITANS (L.)  1-6
    3 POTAMOGETON PERFOLIATUS 1-6
    3 SPARGANIUM SIMPLEX HUDS 3-6
    2 CERATOPHYLLUM DEMERSUM  1-6
    2 MYRIOPHYLLUM SPICATUM L 1-6
    2 HIPPURIS VULGARIS L.    1-6

    2 HOTTONIA PALUSTRIS L.   1-6
    2 RANUNCULUS FLUITANS LAM 1-6
    2 LEMNA GIBBA L.          1-6
    2 SPIRODELA POLYRRHIZA (L 1-6
    1 MYRIOPHYLLUM VERTICILLA 1-6
    1 RANUNCULUS CIRCINATUS S 3-6
    1 RANUNCULUS CIRCINATUS S 1-6
    1 VERONICA ANAGALLIS L.   1-5
    1 ALISMA PLANTAGO L.      1-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 SCIRPUS LACUSTRIS L.    1-6

    1 GLYCERIA ALTISSIMA (MOE 1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 LEMNA MINOR L.          3-6
    1 POTAMOGETON CRISPUS L.  3-6
    1 POTAMOGETON CRISPUS L.  2-6
    1 POTAMOGETON CRISPUS L.  1-6
    1 POTAMOGETON MUCRONATUS  3-5
    1 POTAMOGETON NATANS L.   1-6
    1 POTAMOGETON PECTINATUS  1-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 AZOLLA FILICULOIDES LAM 1-6