FRQ
   30 NUPHAR LUTEUM SM.       1-6
   30 CERATOPHYLLUM DEMERSUM  1-6
   27 MYRIOPHYLLUM SPICATUM L 1-6
   25 RORIPA AMPHIBIA (L.) BE 1-6
   24 LEMNA MINOR L.          1-6
   22 POTAMOGETON LUCENS L.   1-6
   18 SPIRODELA POLYRRHIZA (L 1-6
   17 POTAMOGETON PECTINATUS  1-6
   16 ALISMA PLANTAGO L.      1-6
   13 POTAMOGETON CRISPUS L.  1-6
   12 RANUNCULUS CIRCINATUS S 1-6
   10 POTAMOGETON NATANS L.   1-6
   10 NUPHAR LUTEUM SM.       4-6
   10 CERATOPHYLLUM DEMERSUM  4-6
    9 POTAMOGETON PERFOLIATUS 1-6
    9 SAGITTARIA SAGITTIFOLIA 1-6
    8 SPARGANIUM SIMPLEX HUDS 1-6
    8 HELODEA CANADENSIS RICH 1-6
    7 UTRICULARIA MAJOR SCHMI 1-6
    7 MYRIOPHYLLUM VERTICILLA 1-6
    7 CALLITRICHE OBTUSANGULA 1-6
    6 SAGITTARIA SAGITTIFOLIA 3-6

    6 ALISMA PLANTAGO L.      2-6
    6 POLYGONUM AMPHIBIUM L.  1-6
    6 MYRIOPHYLLUM SPICATUM L 4-6
    5 POTAMOGETON PUSILLUS L. 1-6
    5 LEMNA TRISULCA L.       1-6
    5 HYDROCHARIS MORSUS-RANA 1-6
    5 NYMPHAEA ALBA L.        1-6
    4 POTAMOGETON CRISPUS L.  2-6
    4 SPIRODELA POLYRRHIZA (L 3-6
    4 RANUNCULUS FLUITANS LAM 1-6
    4 NYMPHOIDES PELTATA (GME 1-6
    3 SPARGANIUM SIMPLEX HUDS 3-6
    3 SPARGANIUM RAMOSUM CURT 1-6
    3 POTAMOGETON PECTINATUS  4-6
    3 POTAMOGETON GRAMINEUS L 1-6
    3 NAIAS MAJOR ALL.        1-6
    3 OENANTHE PHELLANDRIUM ( 1-6
    3 APIUM INUNDATUM L.      1-6
    3 TRAPA NATANS L.         1-6
    3 VERONICA ANAGALLIS L.   1-5
    3 RANUNCULUS CIRCINATUS S 3-6
    3 RANUNCULUS AQUATILIS L. 1-6

    3 HIPPURIS VULGARIS L.    1-6
    2 POTAMOGETON NATANS L.   4-6
    2 POTAMOGETON LUCENS L.   4-6
    2 POTA GRAM VAR. HETEROPH 1-6
    2 POTAMOGETON FLUITANS RO 1-6
    2 POTAMOGETON CRISPUS L.  3-6
    2 POTAMOGETON ACUTIFOLIUS 1-6
    2 LEMNA TRISULCA L.       4-6
    2 GLYCERIA FLUITANS (L.)  1-6
    2 BUTOMUS UMBELLATUS L.   1-6
    2 ALISMA NATANS L.        1-6
    2 VERONICA ANAGALLIS L.   2-5
    2 RANUNCULUS TRICHOPHYLLU 1-6
    2 RANUNCULUS FLUITANS LAM 3-6
    2 NYMPHOIDES PELTATA (GME 5-6
    2 MYRIOPHYLLUM VERTICILLA 4-6
    2 MYRIOPHYLLUM ALTERNIFLO 1-6
    2 RORIPA AMPHIBIA (L.) BE 3-6
    2 CALLITRICHE OBTUSANGULA 3-6
    1 POTAMOGETON TRICHOIDES  1-6
    1 POTAMOGETON TRICHOIDES  4-6
    1 POTAMOGETON RUFESCENS S 1-6

    1 POTAMOGETON PUSILLUS L. 3-6
    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON FLUITANS RO 4-6
    1 POTAMOGETON DENSUS L.   1-6
    1 LEMNA MINOR L.          3-6
    1 LEMNA GIBBA L.          1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 GLYCERIA ALTISSIMA (MOE 1-6
    1 SCIRPUS LACUSTRIS L.    1-6
    1 CAREX ELATA ALL.        1-6
    1 SIUM ERECTUM HUDSON     1-6
    1 APIUM NODIFLORUM (L.) L 1-6
    1 VERO ANAG SUBS AQUATICA 1-5
    1 RANUNCULUS FLUITANS LAM 4-6
    1 HOTTONIA PALUSTRIS L.   1-6
    1 NYMPHAEA ALBA L.        5-6
    1 LYTHRUM SALICARIA L.    1-6
    1 UTRICULARIA VULGARIS L. 1-6
    1 HIPPURIS VULGARIS L.    3-6
    1 CERATOPHYLLUM SUBMERSUM 1-6
    1 CALLITRICHE STAGNALIS S 1-6