FRQ
   16 LEMNA MINOR L.          1-6
   14 APIUM NODIFLORUM (L.) L 1-6
   14 NASTURTIUM OFFICINALE R 1-6
   12 APIU NODI SUBS NODIFLOR 1-6
   11 LEMNA MINOR L.          3-6
   10 APIUM NODIFLORUM (L.) L 4-6
   10 NASTURTIUM OFFICINALE R 3-6
    8 APIU NODI SUBS NODIFLOR 5-6
    6 GLYCERIA ALTISSIMA (MOE 1-6
    6 VERONICA BECCABUNGA L.  1-6
    5 CATABROSA AQUATICA (L.) 1-6

    5 VERONICA BECCABUNGA L.  2-6
    4 SIUM ERECTUM HUDSON     1-6
    3 HELODEA CANADENSIS RICH 1-6
    3 CATABROSA AQUATICA (L.) 5-6
    3 ARUNDO PHRAGMITES L.    1-6
    3 VERONICA ANAGALLIS L.   1-5
    3 VERONICA ANAGALLIS L.   2-5
    2 ZANNICHELLIA PALUSTRIS  1-6
    1 AZOLLA FILICULOIDES LAM 1-6
    1 SPARGANIUM SIMPLEX HUDS 1-6
    1 SPARGANIUM RAMOSUM CURT 1-6

    1 POTAMOGETON PUSILLUS L. 1-6
    1 POTAMOGETON PECTINATUS  1-6
    1 POTAMOGETON DENSUS L.   1-6
    1 SPIRODELA POLYRRHIZA (L 1-6
    1 LEMNA TRISULCA L.       1-6
    1 LEMNA TRISULCA L.       4-6
    1 ARUNDO PHRAGMITES L.    4-6
    1 BUTOMUS UMBELLATUS L.   1-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 SOLANUM DULCAMARA L.    1-5
    1 RANUNCULUS FLUITANS LAM 1-6

    1 NUPHAR LUTEUM SM.       1-6
    1 NUPHAR LUTEUM SM.       4-6
    1 UTRICULARIA MAJOR SCHMI 1-6
    1 MYRIOPHYLLUM VERTICILLA 1-6
    1 MYRIOPHYLLUM VERTICILLA 4-6
    1 MYRIOPHYLLUM SPICATUM L 1-6
    1 RORIPA AMPHIBIA (L.) BE 1-6
    1 RORIPA AMPHIBIA (L.) BE 3-6
    1 CALLITRICHE OBTUSANGULA 1-6