| Potamogeton perfoliatus L. |
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| Potamogeton gramineus L. |
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| Potamogeton natans L. |
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| Potamogeton praelongus Wulfen |
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| Potamogeton richardsonii (Benn.) Rydb. |
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| Potamogeton praelongus Wulfen |
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| Potamogeton praelongus Wulfen |
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| Potamogeton oakesianus Robbins |
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| Potamogeton gramineus L. |
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| Potamogeton zosteriformis Fern. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton perfoliatus L. |
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| Potamogeton perfoliatus L. |
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| Potamogeton gramineus L. |
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| Potamogeton obtusifolius Mert. & Koch |
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| Potamogeton pusillus L. |
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| Potamogeton natans 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 epihydrus Raf. |
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| Potamogeton perfoliatus L. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton epihydrus Raf. |
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| Potamogeton spirillus Tuckerm. |
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