FRQ
   43 HYDROCHARIS MORSUS-RANA 1-6
   41 LEMNA MINOR L.          1-6
   37 LEMNA TRISULCA L.       1-6
   32 CERATOPHYLLUM DEMERSUM  1-6
   31 SPIRODELA POLYRRHIZA (L 1-6
   27 HYDROCHARIS MORSUS-RANA 4-6
   21 SPIRODELA POLYRRHIZA (L 3-6
   16 CERATOPHYLLUM DEMERSUM  4-6

   12 LEMNA TRISULCA L.       4-6
   11 LEMNA MINOR L.          3-6
    8 UTRICULARIA MAJOR SCHMI 1-6
    7 HELODEA CANADENSIS RICH 1-6
    7 MYRIOPHYLLUM SPICATUM L 1-6
    3 SALVINIA NATANS (L.) AL 1-6
    3 WOLFFIA ARRHIZA (L.) WI 1-6
    3 LEMNA GIBBA L.          1-6

    3 RANUNCULUS CIRCINATUS S 1-6
    3 UTRICULARIA VULGARIS L. 1-6
    2 POTAMOGETON NATANS L.   1-6
    2 HOTTONIA PALUSTRIS L.   1-6
    2 NUPHAR LUTEUM SM.       1-6
    2 MYRIOPHYLLUM VERTICILLA 1-6
    1 POTAMOGETON PUSILLUS L. 1-6
    1 POTAMOGETON PECTINATUS  1-6

    1 POTAMOGETON LUCENS L.   1-6
    1 POTAMOGETON CRISPUS L.  1-6
    1 POTAMOGETON COMPRESSUS  1-3
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 UTRICULARIA MAJOR SCHMI 3-6
    1 HIPPURIS VULGARIS L.    1-6