FRQ
  371 LEMNA MINOR L.          1-6
  280 SPIRODELA POLYRRHIZA (L 1-6
  228 LEMNA MINOR L.          3-6
  173 LEMNA TRISULCA L.       1-6
  171 CERATOPHYLLUM DEMERSUM  1-6
  154 SPIRODELA POLYRRHIZA (L 3-6
  138 LEMNA GIBBA L.          1-6
  107 AZOLLA FILICULOIDES LAM 1-6
   71 HYDROCHARIS MORSUS-RANA 1-6
   58 CALLITRICHE OBTUSANGULA 1-6
   57 CERATOPHYLLUM DEMERSUM  4-6
   55 LEMNA TRISULCA L.       4-6
   48 MYRIOPHYLLUM SPICATUM L 1-6
   43 AZOLLA FILICULOIDES LAM 3-6
   39 LEMNA GIBBA L.          4-6
   34 WOLFFIA ARRHIZA (L.) WI 1-6
   30 SALVINIA NATANS (L.) AL 1-6
   29 HYDROCHARIS MORSUS-RANA 4-6
   29 HELODEA CANADENSIS RICH 1-6

   23 POTAMOGETON PECTINATUS  1-6
   20 BUTOMUS UMBELLATUS L.   1-6
   19 RANUNCULUS FLUITANS LAM 1-6
   18 CALLITRICHE OBTUSANGULA 3-6
   14 POTAMOGETON PUSILLUS L. 1-6
   13 POTAMOGETON LUCENS L.   1-6
   12 NUPHAR LUTEUM SM.       1-6
   10 POTAMOGETON PERFOLIATUS 1-6
   10 POTAMOGETON CRISPUS L.  1-6
    8 POTAMOGETON FLUITANS RO 1-6
    8 RANUNCULUS CIRCINATUS S 1-6
    8 UTRICULARIA MAJOR SCHMI 1-6
    7 BUTOMUS UMBELLATUS L.   3-6
    6 WOLFFIA ARRHIZA (L.) WI 5-6
    6 SAGITTARIA SAGITTIFOLIA 1-6
    5 SPARGANIUM SIMPLEX HUDS 1-6
    5 POTAMOGETON TRICHOIDES  1-6
    5 RANUNCULUS TRICHOPHYLLU 1-6
    5 RANUNCULUS FLUITANS LAM 3-6

    5 NUPHAR LUTEUM SM.       4-6
    5 UTRICULARIA VULGARIS L. 1-6
    5 MYRIOPHYLLUM VERTICILLA 1-6
    5 NASTURTIUM OFFICINALE R 1-6
    5 CERATOPHYLLUM SUBMERSUM 1-6
    4 SPARGANIUM RAMOSUM CURT 1-6
    3 POTAMOGETON PECTINATUS  4-6
    3 NAIAS MAJOR ALL.        1-6
    3 PHALARIS ARUNDINACEA L. 1-6
    3 GLYCERIA ALTISSIMA (MOE 1-6
    3 HIPPURIS VULGARIS L.    1-6
    3 MYRIOPHYLLUM SPICATUM L 4-6
    2 SPARGANIUM SIMPLEX HUDS 3-6
    2 POTAMOGETON PERFOLIATUS 3-6
    2 POTAMOGETON NATANS L.   1-6
    2 SIUM ERECTUM HUDSON     1-6
    2 RANUNCULUS TRICHOPHYLLU 3-6
    2 RANUNCULUS FLUITANS LAM 4-6
    2 HOTTONIA PALUSTRIS L.   1-6

    2 UTRICULARIA VULGARIS L. 3-6
    1 TYPHA LATIFOLIA L.      1-6
    1 POTAMOGETON PUSILLUS L. 3-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON LUCENS L.   4-6
    1 POTAMOGETON COMPRESSUS  1-3
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 IRIS PSEUDACORUS L.     1-6
    1 VALLISNERIA SPIRALIS L. 1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 ACORUS CALAMUS L.       1-6
    1 SAGITTARIA SAGITTIFOLIA 3-6
    1 OENANTHE FLUVIATILIS CO 1-4
    1 RANUNCULUS CIRCINATUS S 3-6
    1 UTRICULARIA MAJOR SCHMI 3-6
    1 CALLITRICHE HAMULATA KU 1-6