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  • Potamogeton illinoensis (category Potamogeton)
    (= P. × faxonii Morong), P. amplifolius × P. illinoensis (= P. × scoliophyllus Hagström), and P. gramineus × P. illinoensis [= P. × spathuliformis (J.
    4 KB (448 words) - 20:29, 5 November 2020
  • Potamogeton gramineus (category Potamogeton)
    alpinus × P. gramineus (= P. × nericius Hagström), P. gramineus × P. perfoliatus (= P. × nitens Weber [P. × subnitens Hagström]), P. gramineus × P. natans
    5 KB (516 words) - 20:30, 5 November 2020