30 CALLITRICHE OBTUSANGULA 1-6
   24 SPARGANIUM SIMPLEX HUDS 1-6
   23 POTAMOGETON PECTINATUS  1-6
   21 CERATOPHYLLUM DEMERSUM  1-6
   21 MYRIOPHYLLUM SPICATUM L 1-6
   20 VERONICA ANAGALLIS L.   1-5
   20 LEMNA MINOR L.          1-6
   20 SPIRODELA POLYRRHIZA (L 1-6
   12 CALLITRICHE OBTUSANGULA 3-6
   11 MYRIOPHYLLUM VERTICILLA 1-6
   11 RANUNCULUS FLUITANS LAM 1-6
   10 RANUNCULUS CIRCINATUS S 1-6

    9 HELODEA CANADENSIS RICH 1-6
    9 LEMNA TRISULCA L.       1-6
    9 POTAMOGETON FLUITANS RO 1-6
    7 RORIPA AMPHIBIA (L.) BE 1-6
    7 NUPHAR LUTEUM SM.       1-6
    7 POLYGONUM HYDROPIPER L. 1-6
    7 POTAMOGETON CRISPUS L.  1-6
    7 POTAMOGETON LUCENS L.   1-6
    7 POTAMOGETON MUCRONATUS  1-5
    6 NASTURTIUM OFFICINALE R 1-6
    4 CERATOPHYLLUM DEMERSUM  4-6
    4 SIUM ERECTUM HUDSON     1-6

    4 SAGITTARIA SAGITTIFOLIA 1-6
    4 POTAMOGETON PERFOLIATUS 1-6
    4 SPARGANIUM SIMPLEX HUDS 3-6
    3 RANUNCULUS CIRCINATUS S 3-6
    3 VERONICA ANAGALLIS L.   2-5
    3 HELODEA CANADENSIS RICH 4-6
    3 LEMNA MINOR L.          3-6
    2 HIPPURIS VULGARIS L.    1-6
    2 POTAMOGETON FLUITANS RO 4-6
    2 POTAMOGETON PECTINATUS  4-6
    1 HIPPURIS VULGARIS L.    3-6
    1 VERO ANAG SUBS AQUATICA 1-5

    1 GLYCERIA ALTISSIMA (MOE 1-6
    1 GLYCERIA FLUITANS (L.)  1-6
    1 HYDROCHARIS MORSUS-RANA 1-6
    1 POTAMOGETON CRISPUS L.  3-6
    1 POTAMOGETON CRISPUS L.  2-6
    1 POTAMOGETON DENSUS L.   1-6
    1 POTAMOGETON MUCRONATUS  3-5
    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON PUSILLUS L. 1-6
    1 ZANNICHELLIA PALUSTRIS  1-6
    1 AZOLLA FILICULOIDES LAM 1-6