FRQ
   50 LEMNA MINOR L.          1-6
   38 LEMNA TRISULCA L.       1-6
   37 ARUNDO PHRAGMITES L.    1-6
   34 CERATOPHYLLUM DEMERSUM  1-6
   28 HYDROCHARIS MORSUS-RANA 1-6
   24 SPIRODELA POLYRRHIZA (L 1-6
   22 LEMNA MINOR L.          3-6
   19 HYDROCHARIS MORSUS-RANA 4-6
   16 HELODEA CANADENSIS RICH 1-6
   15 LEMNA TRISULCA L.       4-6
   14 LEMNA GIBBA L.          1-6
   11 CERATOPHYLLUM DEMERSUM  4-6
    9 SALVINIA NATANS (L.) AL 1-6
    8 GLYCERIA ALTISSIMA (MOE 1-6
    7 POTAMOGETON LUCENS L.   1-6
    6 HELODEA CANADENSIS RICH 4-6

    5 SPIRODELA POLYRRHIZA (L 3-6
    5 SIUM ERECTUM HUDSON     1-6
    5 UTRICULARIA VULGARIS L. 1-6
    4 POTAMOGETON TRICHOIDES  1-6
    4 WOLFFIA ARRHIZA (L.) WI 1-6
    4 LEMNA GIBBA L.          4-6
    4 CALLITRICHE OBTUSANGULA 1-6
    3 TYPHA LATIFOLIA L.      1-6
    3 SPARGANIUM SIMPLEX HUDS 1-6
    3 POTAMOGETON NATANS L.   1-6
    3 POTAMOGETON CRISPUS L.  1-6
    3 POTAMOGETON ACUTIFOLIUS 1-6
    3 ARUNDO PHRAGMITES L.    4-6
    3 SAGITTARIA SAGITTIFOLIA 1-6
    3 POLYGONUM AMPHIBIUM L.  1-6
    3 NUPHAR LUTEUM SM.       1-6

    3 UTRICULARIA MAJOR SCHMI 1-6
    3 MYRIOPHYLLUM VERTICILLA 1-6
    2 SALVINIA NATANS (L.) AL 5-6
    2 AZOLLA FILICULOIDES LAM 1-6
    2 POTAMOGETON PUSILLUS L. 1-6
    2 POTAMOGETON ACUTIFOLIUS 4-6
    2 OENANTHE PHELLANDRIUM ( 1-6
    2 RANUNCULUS CIRCINATUS S 1-6
    2 HOTTONIA PALUSTRIS L.   1-6
    2 RUMEX HYDROLAPATHUM HUD 1-6
    2 MENTHA AQUATICA L.      1-6
    2 MYOSOTIS SCORPIOIDES (L 1-6
    1 AZOLLA FILICULOIDES LAM 3-6
    1 SPARGANIUM RAMOSUM CURT 1-6
    1 SPARGANIUM RAMOSUM CURT 3-6
    1 POTAMOGETON LUCENS L.   4-6

    1 POTAMOGETON CRISPUS L.  2-6
    1 WOLFFIA ARRHIZA (L.) WI 5-6
    1 JUNCUS OBTUSIFLORUS EHR 1-6
    1 SCIRPUS PALUSTRIS L.    1-6
    1 SCIRPUS LACUSTRIS L.    1-6
    1 BUTOMUS UMBELLATUS L.   1-6
    1 SAGITTARIA SAGITTIFOLIA 3-6
    1 ALISMA PLANTAGO L.      1-6
    1 RANUNCULUS TRICHOPHYLLU 1-6
    1 RANUNCULUS CIRCINATUS S 3-6
    1 LYTHRUM SALICARIA L.    1-6
    1 UTRICULARIA VULGARIS L. 3-6
    1 UTRICULARIA MAJOR SCHMI 3-6
    1 MYRIOPHYLLUM SPICATUM L 1-6
    1 RORIPA AMPHIBIA (L.) BE 1-6
    1 CALLITRICHE STAGNALIS S 1-6