| Potamogeton perfoliatus L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton gramineus L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton pusillus L. ssp. tenuissimus (Mert. & Koch) Haynes & Hellquist |
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| Potamogeton foliosus Raf. |
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| Potamogeton natans L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton foliosus Raf. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton natans L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton alpinus Balbis |
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| Potamogeton epihydrus Raf. |
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| Potamogeton zosteriformis Fern. |
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| Potamogeton perfoliatus L. x x richardsonii |
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| Potamogeton perfoliatus L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton spirillus Tuckerm. |
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| Potamogeton pusillus L. ssp. pusillus |
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| Potamogeton alpinus Balbis |
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| Potamogeton natans L. |
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| Potamogeton foliosus Raf. |
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