FRQ
  178 TRAPA NATANS L.         1-6
  110 POTAMOGETON TRICHOIDES  1-6
  103 POTAMOGETON NATANS L.   1-6
   96 TRAPA NATANS L.         4-6
   89 CERATOPHYLLUM DEMERSUM  1-6
   80 NYMPHAEA ALBA L.        1-6
   67 POTAMOGETON LUCENS L.   1-6
   61 CERATOPHYLLUM DEMERSUM  4-6
   58 RANUNCULUS AQUATILIS L. 1-6
   51 POTAMOGETON NATANS L.   4-6
   51 MYRIOPHYLLUM SPICATUM L 1-6
   46 NUPHAR LUTEUM SM.       1-6
   35 POTAMOGETON TRICHOIDES  4-6
   34 LEMNA MINOR L.          1-6
   32 NYMPHAEA ALBA L.        5-6
   31 HELODEA CANADENSIS RICH 1-6
   25 POTAMOGETON OBTUSIFOLIU 1-6
   24 UTRICULARIA MAJOR SCHMI 1-6
   23 POTAMOGETON LUCENS L.   4-6
   22 POTAMOGETON CRISPUS L.  1-6

   18 NAIAS MAJOR ALL.        1-6
   18 RANUNCULUS CIRCINATUS S 1-6
   17 RANUNCULUS AQUATILIS L. 4-6
   15 SAGITTARIA SAGITTIFOLIA 1-6
   15 MYRIOPHYLLUM VERTICILLA 1-6
   14 SPIRODELA POLYRRHIZA (L 1-6
   14 HOTTONIA PALUSTRIS L.   1-6
   13 MYRIOPHYLLUM SPICATUM L 4-6
   12 NYMPHOIDES PELTATA (GME 1-6
   11 HELODEA CANADENSIS RICH 4-6
   11 SCIRPUS ACICULARIS L.   1-6
   10 POTAMOGETON PUSILLUS L. 1-6
   10 NAIAS MINOR ALL.        1-6
   10 RANUNCULUS CIRCINATUS S 3-6
    9 POTAMOGETON GRAMINEUS L 1-6
    9 SCIRPUS LACUSTRIS L.    1-6
    9 SAGITTARIA SAGITTIFOLIA 3-6
    7 SPARGANIUM SIMPLEX HUDS 1-6
    7 POTAMOGETON PECTINATUS  1-6
    7 POTAMOGETON CRISPUS L.  2-6

    7 UTRICULARIA MAJOR SCHMI 3-6
    6 POTAMOGETON PUSILLUS L. 3-6
    5 SALVINIA NATANS (L.) AL 1-6
    5 POTAMOGETON CRISPUS L.  3-6
    5 LEMNA MINOR L.          3-6
    5 HOTTONIA PALUSTRIS L.   3-6
    5 NUPHAR LUTEUM SM.       4-6
    5 MYRIOPHYLLUM ALTERNIFLO 1-6
    4 POTAMOGETON PERFOLIATUS 1-6
    4 LEMNA TRISULCA L.       1-6
    4 ALISMA PLANTAGO L.      1-6
    4 NYMPHOIDES PELTATA (GME 5-6
    4 CALLITRICHE HAMULATA KU 1-6
    3 POTA GRAM VAR. HETEROPH 1-6
    3 POTAMOGETON GRAMINEUS L 4-6
    3 NYMP ALBA VAR. ALBA     1-6
    2 SPARGANIUM SIMPLEX HUDS 3-6
    2 POTAMOGETON OBTUSIFOLIU 4-6
    2 POTAMOGETON COMPRESSUS  1-3
    2 NAIAS MAJOR ALL.        4-6

    2 HYDROCHARIS MORSUS-RANA 1-6
    2 SCIRPUS ACICULARIS L.   5-6
    2 POLYGONUM AMPHIBIUM L.  1-6
    2 UTRICULARIA VULGARIS L. 1-6
    2 CERATOPHYLLUM SUBMERSUM 1-6
    1 SALVINIA NATANS (L.) AL 5-6
    1 AZOLLA FILICULOIDES LAM 1-6
    1 ZANNICHELLIA PALUSTRIS  1-6
    1 TYPHA LATIFOLIA L.      1-6
    1 POTAMOGETON RUFESCENS S 1-6
    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON DENSUS L.   1-6
    1 POTAMOGETON DENSUS L.   3-6
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 GLYCERIA FLUITANS (L.)  1-6
    1 ARUNDO PHRAGMITES L.    1-6
    1 RANUNCULUS TRICHOPHYLLU 1-6
    1 RANUNCULUS FLUITANS LAM 1-6
    1 HIPPURIS VULGARIS L.    1-6
    1 MYRIOPHYLLUM BRASILIENS 1-4