47 LEMNA MINOR L.          1-6
   35 CALLITRICHE OBTUSANGULA 1-6
   35 SPIRODELA POLYRRHIZA (L 1-6
   27 LEMNA MINOR L.          3-6
   19 CERATOPHYLLUM DEMERSUM  1-6
   17 CALLITRICHE OBTUSANGULA 3-6
   12 RANUNCULUS FLUITANS LAM 1-6
   12 BUTOMUS UMBELLATUS L.   1-6
   10 LEMNA GIBBA L.          1-6
   10 AZOLLA FILICULOIDES LAM 1-6
    7 MYRIOPHYLLUM SPICATUM L 1-6

    7 SPIRODELA POLYRRHIZA (L 3-6
    6 LEMNA TRISULCA L.       1-6
    6 POTAMOGETON PECTINATUS  1-6
    5 NASTURTIUM OFFICINALE R 1-6
    5 RANUNCULUS FLUITANS LAM 3-6
    5 BUTOMUS UMBELLATUS L.   3-6
    5 POTAMOGETON FLUITANS RO 1-6
    4 HYDROCHARIS MORSUS-RANA 1-6
    4 POTAMOGETON LUCENS L.   1-6
    4 POTAMOGETON PUSILLUS L. 1-6
    3 RANUNCULUS TRICHOPHYLLU 1-6

    3 GLYCERIA ALTISSIMA (MOE 1-6
    3 PHALARIS ARUNDINACEA L. 1-6
    3 POTAMOGETON PERFOLIATUS 1-6
    3 SPARGANIUM RAMOSUM CURT 1-6
    3 SPARGANIUM SIMPLEX HUDS 1-6
    2 RANUNCULUS FLUITANS LAM 4-6
    2 SIUM ERECTUM HUDSON     1-6
    2 HYDROCHARIS MORSUS-RANA 4-6
    2 SPARGANIUM SIMPLEX HUDS 3-6
    1 CALLITRICHE HAMULATA KU 1-6
    1 MYRIOPHYLLUM SPICATUM L 4-6

    1 NUPHAR LUTEUM SM.       1-6
    1 RANUNCULUS TRICHOPHYLLU 3-6
    1 OENANTHE FLUVIATILIS CO 1-4
    1 SAGITTARIA SAGITTIFOLIA 3-6
    1 SAGITTARIA SAGITTIFOLIA 1-6
    1 IRIS PSEUDACORUS L.     1-6
    1 WOLFFIA ARRHIZA (L.) WI 1-6
    1 POTAMOGETON PERFOLIATUS 3-6
    1 TYPHA LATIFOLIA L.      1-6
    1 AZOLLA FILICULOIDES LAM 3-6