20 MYRIOPHYLLUM SPICATUM L 1-6
   18 MYRIOPHYLLUM SPICATUM L 4-6
   16 POTAMOGETON LUCENS L.   1-6
   11 NUPHAR LUTEUM SM.       1-6

    7 POTAMOGETON NATANS L.   1-6
    4 POTAMOGETON PERFOLIATUS 1-6
    2 RANUNCULUS CIRCINATUS S 1-6
    2 POTAMOGETON CRISPUS L.  1-6

    2 POTAMOGETON LUCENS L.   4-6
    2 POTAMOGETON PECTINATUS  1-6
    1 MYRIOPHYLLUM VERTICILLA 1-6
    1 NYMPHAEA ALBA L.        1-6

    1 HELODEA CANADENSIS RICH 1-6
    1 NAIAS MAJOR ALL.        1-6
    1 POTAMOGETON PECTINATUS  4-6
    1 POTAMOGETON PERFOLIATUS 3-6