38 SIUM ERECTUM HUDSON     1-6
   30 CALLITRICHE OBTUSANGULA 1-6
   23 CALLITRICHE OBTUSANGULA 3-6
   20 SPARGANIUM SIMPLEX HUDS 1-6
   18 HELODEA CANADENSIS RICH 1-6
   16 LEMNA TRISULCA L.       1-6
   12 SIUM ERECTUM HUDSON     4-6
    8 NUPHAR LUTEUM SM.       1-6

    8 LEMNA MINOR L.          1-6
    7 SAGITTARIA SAGITTIFOLIA 1-6
    6 NASTURTIUM OFFICINALE R 1-6
    5 POTAMOGETON NATANS L.   1-6
    3 MYRIOPHYLLUM SPICATUM L 1-6
    3 HIPPURIS VULGARIS L.    1-6
    3 LEMNA TRISULCA L.       4-6
    3 SPARGANIUM SIMPLEX HUDS 3-6

    2 CERATOPHYLLUM DEMERSUM  1-6
    2 NASTURTIUM OFFICINALE R 3-6
    2 HOTTONIA PALUSTRIS L.   1-6
    2 POTAMOGETON COLORATUS V 1-6
    2 POTAMOGETON MUCRONATUS  1-5
    2 POTAMOGETON PERFOLIATUS 1-6
    1 MYRIOPHYLLUM VERTICILLA 1-6
    1 HOTTONIA PALUSTRIS L.   3-6

    1 RANUNCULUS FLUITANS LAM 1-6
    1 SCIRPUS LACUSTRIS L.    1-6
    1 HYDROCHARIS MORSUS-RANA 1-6
    1 LEMNA GIBBA L.          1-6
    1 SPIRODELA POLYRRHIZA (L 1-6
    1 POTAMOGETON PECTINATUS  1-6
    1 POTAMOGETON TRICHOIDES  1-6