FRQ
  486 LEMNA MINOR L.          1-6
  325 SPIRODELA POLYRRHIZA (L 1-6
  277 LEMNA MINOR L.          3-6
  237 LEMNA TRISULCA L.       1-6
  197 CERATOPHYLLUM DEMERSUM  1-6
  170 LEMNA GIBBA L.          1-6
  164 SPIRODELA POLYRRHIZA (L 3-6
  115 AZOLLA FILICULOIDES LAM 1-6
  108 HYDROCHARIS MORSUS-RANA 1-6
   72 LEMNA TRISULCA L.       4-6
   68 LEMNA GIBBA L.          4-6
   66 CERATOPHYLLUM DEMERSUM  4-6
   59 CALLITRICHE OBTUSANGULA 1-6
   51 SALVINIA NATANS (L.) AL 1-6
   49 MYRIOPHYLLUM SPICATUM L 1-6
   48 WOLFFIA ARRHIZA (L.) WI 1-6
   47 AZOLLA FILICULOIDES LAM 3-6
   46 HYDROCHARIS MORSUS-RANA 4-6
   38 HELODEA CANADENSIS RICH 1-6
   35 UTRICULARIA VULGARIS L. 1-6
   24 POTAMOGETON PECTINATUS  1-6
   23 HOTTONIA PALUSTRIS L.   1-6
   22 UTRICULARIA VULGARIS L. 3-6
   20 BUTOMUS UMBELLATUS L.   1-6
   20 NYMPHAEA ALBA L.        1-6

   19 RANUNCULUS FLUITANS LAM 1-6
   19 CALLITRICHE OBTUSANGULA 3-6
   18 POTAMOGETON PUSILLUS L. 1-6
   18 UTRICULARIA MAJOR SCHMI 1-6
   17 SALVINIA NATANS (L.) AL 5-6
   17 NUPHAR LUTEUM SM.       1-6
   16 POTAMOGETON NATANS L.   1-6
   14 POTAMOGETON LUCENS L.   1-6
   12 WOLFFIA ARRHIZA (L.) WI 5-6
   11 POTAMOGETON TRICHOIDES  1-6
   11 POTAMOGETON PERFOLIATUS 1-6
   10 POTAMOGETON CRISPUS L.  1-6
    8 POTAMOGETON FLUITANS RO 1-6
    8 RANUNCULUS CIRCINATUS S 1-6
    8 HOTTONIA PALUSTRIS L.   3-6
    7 BUTOMUS UMBELLATUS L.   3-6
    7 SAGITTARIA SAGITTIFOLIA 1-6
    7 SIUM ERECTUM HUDSON     1-6
    7 CERATOPHYLLUM SUBMERSUM 1-6
    6 SPARGANIUM SIMPLEX HUDS 1-6
    6 HIPPURIS VULGARIS L.    1-6
    6 MYRIOPHYLLUM VERTICILLA 1-6
    6 NASTURTIUM OFFICINALE R 1-6
    5 SPARGANIUM RAMOSUM CURT 1-6
    5 POTAMOGETON COMPRESSUS  1-3

    5 RANUNCULUS TRICHOPHYLLU 1-6
    5 RANUNCULUS FLUITANS LAM 3-6
    5 NUPHAR LUTEUM SM.       4-6
    4 POTAMOGETON PUSILLUS L. 3-6
    4 NAIAS MAJOR ALL.        1-6
    4 OENANTHE PHELLANDRIUM ( 1-6
    4 UTRICULARIA MAJOR SCHMI 3-6
    3 POTAMOGETON TRICHOIDES  4-6
    3 POTAMOGETON PECTINATUS  4-6
    3 HELODEA CANADENSIS RICH 4-6
    3 PHALARIS ARUNDINACEA L. 1-6
    3 GLYCERIA ALTISSIMA (MOE 1-6
    3 NYMPHAEA ALBA L.        5-6
    3 MYRIOPHYLLUM SPICATUM L 4-6
    2 TYPHA LATIFOLIA L.      1-6
    2 SPARGANIUM SIMPLEX HUDS 3-6
    2 POTAMOGETON PERFOLIATUS 3-6
    2 POTAMOGETON OBTUSIFOLIU 1-6
    2 POTAMOGETON NATANS L.   4-6
    2 POTAMOGETON ACUTIFOLIUS 1-6
    2 SCIRPUS ACICULARIS L.   1-6
    2 ALISMA NATANS L.        1-6
    2 TRAPA NATANS L.         1-6
    2 RANUNCULUS TRICHOPHYLLU 3-6
    2 RANUNCULUS LINGUA L.    1-6

    2 RANUNCULUS FLUITANS LAM 4-6
    2 MYRIOPHYLLUM ALTERNIFLO 1-6
    1 ZANNICHELLIA PALUSTRIS  1-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON LUCENS L.   4-6
    1 POTAMOGETON GRAMINEUS L 1-6
    1 POTAMOGETON ACUTIFOLIUS 4-6
    1 IRIS PSEUDACORUS L.     1-6
    1 VALLISNERIA SPIRALIS L. 1-6
    1 GLYCERIA FLUITANS (L.)  1-6
    1 SCIRPUS LACUSTRIS L.    1-6
    1 ACORUS CALAMUS L.       1-6
    1 SAGITTARIA SAGITTIFOLIA 3-6
    1 ALISMA PLANTAGO L.      1-6
    1 OENANTHE FLUVIATILIS CO 1-4
    1 APIUM INUNDATUM L.      1-6
    1 RANU TRIC VAR. DOUETI F 1-5
    1 RANUNCULUS CIRCINATUS S 3-6
    1 RANUNCULUS AQUATILIS L. 1-6
    1 RORIPA AMPHIBIA (L.) BE 1-6
    1 CALLITRICHE STAGNALIS S 1-6
    1 CALLITRICHE PEDUNCULATA 1-6
    1 CALLITRICHE HAMULATA KU 1-6