FRQ
  163 MYRIOPHYLLUM SPICATUM L 1-6
  145 CERATOPHYLLUM DEMERSUM  1-6
  119 POTAMOGETON PECTINATUS  1-6
  116 NUPHAR LUTEUM SM.       1-6
   94 RANUNCULUS CIRCINATUS S 1-6
   73 POTAMOGETON LUCENS L.   1-6
   64 POTAMOGETON PERFOLIATUS 1-6
   63 SPARGANIUM SIMPLEX HUDS 1-6
   57 HELODEA CANADENSIS RICH 1-6
   53 POTAMOGETON CRISPUS L.  1-6
   48 NUPHAR LUTEUM SM.       4-6
   46 MYRIOPHYLLUM SPICATUM L 4-6
   45 CERATOPHYLLUM DEMERSUM  4-6
   40 MYRIOPHYLLUM VERTICILLA 1-6
   39 RANUNCULUS CIRCINATUS S 3-6
   37 POTAMOGETON FLUITANS RO 1-6
   32 POTAMOGETON NATANS L.   1-6

   26 SAGITTARIA SAGITTIFOLIA 1-6
   25 POTAMOGETON PERFOLIATUS 3-6
   25 LEMNA MINOR L.          1-6
   24 POTAMOGETON PUSILLUS L. 1-6
   24 POTAMOGETON PECTINATUS  4-6
   21 POTAMOGETON MUCRONATUS  1-5
   19 NYMPHAEA ALBA L.        1-6
   16 POTAMOGETON MUCRONATUS  3-5
   16 POTAMOGETON FLUITANS RO 4-6
   15 RANUNCULUS FLUITANS LAM 1-6
   14 SPARGANIUM SIMPLEX HUDS 3-6
   14 HOTTONIA PALUSTRIS L.   1-6
   12 SPIRODELA POLYRRHIZA (L 1-6
   10 POTAMOGETON OBTUSIFOLIU 1-6
   10 LEMNA TRISULCA L.       1-6
    9 POTAMOGETON LUCENS L.   4-6
    9 HYDROCHARIS MORSUS-RANA 1-6

    8 ZANNICHELLIA PALUSTRIS  1-6
    8 POTAMOGETON DENSUS L.   1-6
    8 VALLISNERIA SPIRALIS L. 1-6
    7 POTAMOGETON TRICHOIDES  1-6
    7 NAIAS MAJOR ALL.        1-6
    7 CALLITRICHE OBTUSANGULA 1-6
    6 HELODEA CANADENSIS RICH 4-6
    6 UTRICULARIA VULGARIS L. 1-6
    5 SCIRPUS LACUSTRIS L.    1-6
    5 RANUNCULUS TRICHOPHYLLU 1-6
    4 POTAMOGETON TRICHOIDES  4-6
    4 POTAMOGETON NATANS L.   4-6
    4 SAGITTARIA SAGITTIFOLIA 3-6
    4 LUDWIGIA PALUSTRIS (L.) 1-6
    4 HIPPURIS VULGARIS L.    1-6
    3 BUTOMUS UMBELLATUS L.   1-6
    3 RANU TRIC VAR. TRICHOPH 1-6

    2 SIUM ERECTUM HUDSON     1-6
    1 POTAMOGETON PUSILLUS L. 3-6
    1 POTAMOGETON OBTUSIFOLIU 4-6
    1 POTAMOGETON DENSUS L.   3-6
    1 NAIAS MINOR ALL.        1-6
    1 LEMNA TRISULCA L.       4-6
    1 LEMNA GIBBA L.          1-6
    1 TRAPA NATANS L.         1-6
    1 RANUNCULUS FLUITANS LAM 3-6
    1 HOTTONIA PALUSTRIS L.   3-6
    1 LUDWIGIA PALUSTRIS (L.) 4-6
    1 NYMPHAEA ALBA L.        5-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 HIPPURIS VULGARIS L.    3-6
    1 NASTURTIUM OFFICINALE R 1-6