FRQ
  102 POTAMOGETON NATANS L.   1-6
   70 POTAMOGETON TRICHOIDES  1-6
   66 NYMPHAEA ALBA L.        1-6
   58 TRAPA NATANS L.         1-6
   57 RANUNCULUS AQUATILIS L. 1-6
   51 POTAMOGETON NATANS L.   4-6
   38 MYRIOPHYLLUM SPICATUM L 1-6
   32 POTAMOGETON TRICHOIDES  4-6
   29 NYMPHAEA ALBA L.        5-6
   22 POTAMOGETON LUCENS L.   1-6
   22 HELODEA CANADENSIS RICH 1-6
   22 NUPHAR LUTEUM SM.       1-6
   21 LEMNA MINOR L.          1-6
   21 UTRICULARIA MAJOR SCHMI 1-6
   20 POTAMOGETON CRISPUS L.  1-6
   18 POTAMOGETON OBTUSIFOLIU 1-6
   17 RANUNCULUS AQUATILIS L. 4-6
   14 SAGITTARIA SAGITTIFOLIA 1-6

   14 HOTTONIA PALUSTRIS L.   1-6
   12 MYRIOPHYLLUM SPICATUM L 4-6
   11 SCIRPUS ACICULARIS L.   1-6
   10 CERATOPHYLLUM DEMERSUM  1-6
    9 POTAMOGETON PUSILLUS L. 1-6
    9 POTAMOGETON GRAMINEUS L 1-6
    9 SAGITTARIA SAGITTIFOLIA 3-6
    9 TRAPA NATANS L.         4-6
    8 POTAMOGETON LUCENS L.   4-6
    8 NAIAS MAJOR ALL.        1-6
    8 SCIRPUS LACUSTRIS L.    1-6
    7 POTAMOGETON CRISPUS L.  2-6
    7 UTRICULARIA MAJOR SCHMI 3-6
    6 SPARGANIUM SIMPLEX HUDS 1-6
    6 POTAMOGETON PUSILLUS L. 3-6
    6 POTAMOGETON PECTINATUS  1-6
    5 POTAMOGETON CRISPUS L.  3-6
    5 HOTTONIA PALUSTRIS L.   3-6

    5 MYRIOPHYLLUM ALTERNIFLO 1-6
    4 NAIAS MINOR ALL.        1-6
    4 HELODEA CANADENSIS RICH 4-6
    4 ALISMA PLANTAGO L.      1-6
    4 CALLITRICHE HAMULATA KU 1-6
    3 POTA GRAM VAR. HETEROPH 1-6
    3 POTAMOGETON GRAMINEUS L 4-6
    3 LEMNA TRISULCA L.       1-6
    3 LEMNA MINOR L.          3-6
    3 MYRIOPHYLLUM VERTICILLA 1-6
    2 SPARGANIUM SIMPLEX HUDS 3-6
    2 POTAMOGETON PERFOLIATUS 1-6
    2 POTAMOGETON COMPRESSUS  1-3
    2 SCIRPUS ACICULARIS L.   5-6
    2 POLYGONUM AMPHIBIUM L.  1-6
    2 CERATOPHYLLUM DEMERSUM  4-6
    1 ZANNICHELLIA PALUSTRIS  1-6
    1 TYPHA LATIFOLIA L.      1-6

    1 POTAMOGETON PERFOLIATUS 3-6
    1 POTAMOGETON OBTUSIFOLIU 4-6
    1 POTAMOGETON DENSUS L.   1-6
    1 POTAMOGETON DENSUS L.   3-6
    1 POTAMOGETON ACUTIFOLIUS 1-6
    1 HYDROCHARIS MORSUS-RANA 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 RANUNCULUS CIRCINATUS S 1-6
    1 NUPHAR LUTEUM SM.       4-6
    1 UTRICULARIA VULGARIS L. 1-6
    1 MYRIOPHYLLUM BRASILIENS 1-4
    1 CERATOPHYLLUM SUBMERSUM 1-6