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Potamogeton natans x nodosus = P. x schreberi
Species hybrid, Flowering plant, Freshwater
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Potamogeton natans x polygonifolius = P. x gessnacensis
Species hybrid, Flowering plant, Freshwater
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Potamogeton pectinatus x vaginatus = P. x bottnicus
Species hybrid, Flowering plant, Freshwater
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Potamogeton perfoliatus x crispus = P. x cooperi – Cooper's Pondweed
Species hybrid, Flowering plant, Freshwater
Dyfrllys Cooper
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Potamogeton polygonifolius x gramineus = P. x lanceolatifolius
Species hybrid, Flowering plant, Freshwater
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Potamogeton praelongus x crispus = P. x undulatus
Species hybrid, Flowering plant, Freshwater
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Potamogeton praelongus x perfoliatus = P. x cognatus
Species hybrid, Flowering plant, Freshwater
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Potamogeton pusillus x trichoides = P. x grovesii
Species hybrid, Flowering plant, Freshwater
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Potamogeton trichoides x crispus = P. x bennettii
Species hybrid, Flowering plant, Freshwater