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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Filsø, Mellemsø, Henne, SV-Jylland, Danmark
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Navn Sø, Jylland, Danmark
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Førby Sø, Thy, Danmark
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Potamogeton heterophylius. 12, typical habit of land form; 13, terminal portion of rootstock showing tendency to become tuberous; 14, same, more advanced stage; 15, aquarium specimen
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Potamogeton heterophyllus (16-17); Potamogeton perfoliatus (18-19). 16, aquarium specimen; 17, aquarium specimen; 18, winter shoot showing elongation of internodes; 19, growing tips of same
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Potamogeton heterophyllus.
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