218 MYRIOPHYLLUM SPICATUM L 1-6
  203 CERATOPHYLLUM DEMERSUM  1-6
  169 POTAMOGETON PECTINATUS  1-6
  122 NUPHAR LUTEUM SM.       1-6
  101 RANUNCULUS CIRCINATUS S 1-6
   98 POTAMOGETON LUCENS L.   1-6
   89 LEMNA MINOR L.          1-6
   86 POTAMOGETON PERFOLIATUS 1-6
   77 SPARGANIUM SIMPLEX HUDS 1-6
   63 POTAMOGETON CRISPUS L.  1-6
   62 CERATOPHYLLUM DEMERSUM  4-6
   62 HELODEA CANADENSIS RICH 1-6
   61 MYRIOPHYLLUM SPICATUM L 4-6
   59 SPIRODELA POLYRRHIZA (L 1-6
   56 POTAMOGETON FLUITANS RO 1-6
   49 NUPHAR LUTEUM SM.       4-6
   43 MYRIOPHYLLUM VERTICILLA 1-6
   43 RANUNCULUS CIRCINATUS S 3-6
   33 POTAMOGETON NATANS L.   1-6
   30 SAGITTARIA SAGITTIFOLIA 1-6

   30 POTAMOGETON PECTINATUS  4-6
   30 POTAMOGETON PERFOLIATUS 3-6
   30 POTAMOGETON PUSILLUS L. 1-6
   26 POTAMOGETON FLUITANS RO 4-6
   25 RANUNCULUS FLUITANS LAM 1-6
   23 POTAMOGETON MUCRONATUS  1-5
   22 BUTOMUS UMBELLATUS L.   1-6
   21 NAIAS MAJOR ALL.        1-6
   20 CALLITRICHE OBTUSANGULA 1-6
   19 NYMPHAEA ALBA L.        1-6
   16 HOTTONIA PALUSTRIS L.   1-6
   16 LEMNA GIBBA L.          1-6
   16 POTAMOGETON MUCRONATUS  3-5
   15 SPARGANIUM SIMPLEX HUDS 3-6
   14 AZOLLA FILICULOIDES LAM 1-6
   12 LEMNA TRISULCA L.       1-6
   12 NAIAS MAJOR ALL.        4-6
   12 POTAMOGETON LUCENS L.   4-6
   11 HYDROCHARIS MORSUS-RANA 1-6
   11 POTAMOGETON OBTUSIFOLIU 1-6

    9 VALLISNERIA SPIRALIS L. 1-6
    9 POTAMOGETON TRICHOIDES  1-6
    9 ZANNICHELLIA PALUSTRIS  1-6
    8 SPIRODELA POLYRRHIZA (L 3-6
    8 POTAMOGETON DENSUS L.   1-6
    7 LEMNA MINOR L.          3-6
    6 UTRICULARIA VULGARIS L. 1-6
    6 HELODEA CANADENSIS RICH 4-6
    5 RANUNCULUS TRICHOPHYLLU 1-6
    5 SCIRPUS LACUSTRIS L.    1-6
    4 HIPPURIS VULGARIS L.    1-6
    4 LUDWIGIA PALUSTRIS (L.) 1-6
    4 SAGITTARIA SAGITTIFOLIA 3-6
    4 POTAMOGETON NATANS L.   4-6
    4 POTAMOGETON PUSILLUS L. 3-6
    4 POTAMOGETON TRICHOIDES  4-6
    3 UTRICULARIA MAJOR SCHMI 1-6
    3 RANU TRIC VAR. TRICHOPH 1-6
    2 NASTURTIUM OFFICINALE R 1-6
    2 RANUNCULUS FLUITANS LAM 3-6

    2 SIUM ERECTUM HUDSON     1-6
    1 CALLITRICHE OBTUSANGULA 3-6
    1 HIPPURIS VULGARIS L.    3-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 NYMPHAEA ALBA L.        5-6
    1 LUDWIGIA PALUSTRIS (L.) 4-6
    1 HOTTONIA PALUSTRIS L.   3-6
    1 RANUNCULUS FLUITANS LAM 4-6
    1 VERONICA ANAGALLIS L.   1-5
    1 TRAPA NATANS L.         1-6
    1 BUTOMUS UMBELLATUS L.   3-6
    1 LEMNA TRISULCA L.       4-6
    1 NAIAS MINOR ALL.        1-6
    1 POTAMOGETON DENSUS L.   3-6
    1 POTAMOGETON OBTUSIFOLIU 4-6
    1 POTAMOGETON X-ZIZI MERT 1-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 AZOLLA FILICULOIDES LAM 3-6