FRQ
   25 EQUISETUM LIMOSUM (L.)  1-6
   19 CERATOPHYLLUM DEMERSUM  1-6
   15 POTAMOGETON LUCENS L.   1-6
   12 UTRICULARIA MAJOR SCHMI 1-6
   11 CERATOPHYLLUM DEMERSUM  4-6
   10 MYRIOPHYLLUM SPICATUM L 1-6
    8 POTAMOGETON OBTUSIFOLIU 1-6
    8 POTAMOGETON OBTUSIFOLIU 4-6

    8 NYMPHAEA ALBA L.        1-6
    7 NAIAS MINOR ALL.        1-6
    6 TRAPA NATANS L.         1-6
    4 EQUISETUM LIMOSUM (L.)  3-6
    4 POTAMOGETON LUCENS L.   4-6
    4 NYMPHAEA ALBA L.        5-6
    2 ZANNICHELLIA PALUSTRIS  1-6
    2 SPARGANIUM MINIMUM FRIE 1-6

    2 SPARGANIUM MINIMUM FRIE 4-6
    2 POTAMOGETON NATANS L.   1-6
    2 POTAMOGETON NATANS L.   4-6
    2 NUPHAR LUTEUM SM.       1-6
    1 POTAMOGETON PUSILLUS L. 1-6
    1 POTAMOGETON PUSILLUS L. 3-6
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 SPIRODELA POLYRRHIZA (L 1-6

    1 LEMNA MINOR L.          1-6
    1 NYMP ALBA VAR. ALBA     1-6
    1 NUPHAR LUTEUM SM.       4-6
    1 UTRICULARIA VULGARIS L. 1-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 HIPPURIS VULGARIS L.    1-6
    1 HIPPURIS VULGARIS L.    3-6
    1 MYRIOPHYLLUM ALTERNIFLO 1-6