FRQ
   23 CALLITRICHE OBTUSANGULA 1-6
   22 POTAMOGETON PECTINATUS  1-6
   21 MYRIOPHYLLUM VERTICILLA 1-6
   10 CALLITRICHE OBTUSANGULA 3-6
    8 SPARGANIUM SIMPLEX HUDS 1-6
    8 POTAMOGETON LUCENS L.   1-6

    7 LEMNA TRISULCA L.       1-6
    6 HELODEA CANADENSIS RICH 1-6
    5 POTAMOGETON PUSILLUS L. 1-6
    5 POTAMOGETON CRISPUS L.  1-6
    5 MYRIOPHYLLUM SPICATUM L 1-6
    5 CERATOPHYLLUM DEMERSUM  1-6

    4 ZANNICHELLIA PALUSTRIS  1-6
    4 HELODEA CANADENSIS RICH 4-6
    3 MYRIOPHYLLUM SPICATUM L 4-6
    2 POTAMOGETON PERFOLIATUS 1-6
    2 POTAMOGETON MUCRONATUS  1-5
    2 POTAMOGETON DENSUS L.   1-6

    2 CERATOPHYLLUM DEMERSUM  4-6
    1 ZANN PALU VAR. PALUSTRI 1-6
    1 SPARGANIUM SIMPLEX HUDS 3-6
    1 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON PECTINATUS  4-6
    1 LEMNA MINOR L.          1-6