Ribbonleaf Pondweed, Ribbon-leaf Pondweed, Ribbon-leaved Pondweed
Potamogeton epihydrus
Synonyms: Potamogeton epihydrus ssp. nuttallii, Potamogeton epihydrus var. ramosus
The photo above shows a close-up of ribbonleaf pondweed as seen in a slow-draining pools in a vernally moist meadow. The submerged stem leaves are much different in shape than the floating leaves as seen here. The submerged stem leaves are long, narrow (but greater than 2 mm) and have a prominent midvein which runs their length (barely visible here).
The photo above shows a close-up of the floating leaves of ribbonleaf pondweed as seen in a slow-moving stream in a vernally submerged meadow.
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Close-ups of the floating leaves of ribbonleaf pondweed as seen in a slow-moving stream in a vernally submerged meadow.
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Ribbonleaf pondweed as seen in a shallow pond in a vernally moist meadow. Note the long, narrow submerged leaves and the broader, elliptic floating leaves.
Paul Slichter