FRQ
   67 NYMPHAEA ALBA L.        1-6
   60 CERATOPHYLLUM DEMERSUM  1-6
   47 NUPHAR LUTEUM SM.       1-6
   43 MYRIOPHYLLUM VERTICILLA 1-6
   32 CERATOPHYLLUM DEMERSUM  4-6
   27 TRAPA NATANS L.         1-6
   25 NYMPHAEA ALBA L.        5-6
   21 POTAMOGETON LUCENS L.   1-6
   19 RANUNCULUS CIRCINATUS S 1-6
   18 NUPHAR LUTEUM SM.       4-6
   17 MYRIOPHYLLUM SPICATUM L 1-6

   11 UTRICULARIA MAJOR SCHMI 1-6
    9 POTAMOGETON PECTINATUS  1-6
    9 MYRIOPHYLLUM VERTICILLA 4-6
    7 NYMPHOIDES PELTATA (GME 1-6
    6 POTAMOGETON CRISPUS L.  1-6
    6 NAIAS MAJOR ALL.        1-6
    6 TRAPA NATANS L.         4-6
    6 HIPPURIS VULGARIS L.    1-6
    5 POTAMOGETON LUCENS L.   4-6
    5 MYRIOPHYLLUM SPICATUM L 4-6
    4 LEMNA TRISULCA L.       1-6

    3 POTAMOGETON NATANS L.   1-6
    3 HELODEA CANADENSIS RICH 1-6
    3 RANUNCULUS CIRCINATUS S 3-6
    3 UTRICULARIA VULGARIS L. 1-6
    2 POTAMOGETON PERFOLIATUS 1-6
    2 HYDROCHARIS MORSUS-RANA 1-6
    1 SALVINIA NATANS (L.) AL 1-6
    1 SPARGANIUM MINIMUM FRIE 1-6
    1 POTAMOGETON PUSILLUS L. 1-6
    1 POTAMOGETON PECTINATUS  4-6
    1 POTAMOGETON OBTUSIFOLIU 1-6

    1 POTAMOGETON CRISPUS L.  2-6
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 SPIRODELA POLYRRHIZA (L 1-6
    1 LEMNA MINOR L.          1-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 SAGITTARIA SAGITTIFOLIA 3-6
    1 HOTTONIA PALUSTRIS L.   1-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 UTRICULARIA MAJOR SCHMI 3-6
    1 HIPPURIS VULGARIS L.    3-6