FRQ
   41 SPARGANIUM SIMPLEX HUDS 1-6
   35 SAGITTARIA SAGITTIFOLIA 1-6
   34 SPARGANIUM SIMPLEX HUDS 3-6
   22 SAGITTARIA SAGITTIFOLIA 3-6
   17 CERATOPHYLLUM DEMERSUM  1-6
   16 NUPHAR LUTEUM SM.       1-6
   14 POTAMOGETON PECTINATUS  1-6
   14 HELODEA CANADENSIS RICH 1-6
   13 LEMNA MINOR L.          1-6
   13 BUTOMUS UMBELLATUS L.   1-6
   10 POTAMOGETON FLUITANS RO 1-6

    8 SPIRODELA POLYRRHIZA (L 1-6
    7 POTAMOGETON LUCENS L.   1-6
    7 POTAMOGETON CRISPUS L.  1-6
    7 MYRIOPHYLLUM SPICATUM L 1-6
    6 POTAMOGETON OBTUSIFOLIU 1-6
    5 POTAMOGETON PUSILLUS L. 1-6
    5 POTAMOGETON NATANS L.   1-6
    5 CERATOPHYLLUM DEMERSUM  4-6
    5 CALLITRICHE OBTUSANGULA 1-6
    4 POTAMOGETON X-ZIZI MERT 1-6
    4 LEMNA MINOR L.          3-6

    4 NUPHAR LUTEUM SM.       4-6
    3 POTAMOGETON PERFOLIATUS 1-6
    3 POTAMOGETON FLUITANS RO 4-6
    3 SPIRODELA POLYRRHIZA (L 3-6
    3 HELODEA CANADENSIS RICH 4-6
    3 BUTOMUS UMBELLATUS L.   3-6
    2 POTAMOGETON PERFOLIATUS 3-6
    2 POTAMOGETON ACUTIFOLIUS 1-6
    2 LEMNA TRISULCA L.       1-6
    2 NYMPHOIDES PELTATA (GME 1-6
    1 SPARGANIUM RAMOSUM CURT 1-6

    1 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON PECTINATUS  4-6
    1 POTAMOGETON OBTUSIFOLIU 4-6
    1 POTAMOGETON LUCENS L.   4-6
    1 LEMNA GIBBA L.          1-6
    1 ACORUS CALAMUS L.       1-6
    1 ALISMA PLANTAGO L.      1-6
    1 SIUM ERECTUM HUDSON     1-6
    1 HIPPURIS VULGARIS L.    1-6
    1 MYRIOPHYLLUM VERTICILLA 1-6