Ribbonleaf Pondweed, Ribbon-leaved Pondweed
Potamogeton epihydrus
Synonyms: Potamogeton epihydrus ssp. nuttallii, Potamogeton epihydrus var. epihydrus, Potamogeton epihydrus var. nuttallii, Potamogeton epihydrus var. ramosus
The photo above shows a close-up of ribbonleaf pondweed as seen in one of the slow-draining pools in Swampy Meadows on the western slopes of Mt. Adams.......September 6, 2008. 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 Swampy Meadows on the western slopes of Mt. Adams........September 6, 2008.
The photo above shows a close-up of ribbonleaf pondweed as seen in Swampy Meadows on the western slopes of Mt. Adams.........September 6, 2008.
The photo above shows a close-up of the floating leaves of ribbonleaf pondweed as seen in one of the slow-draining pools in Swampy Meadows on the western slopes of Mt. Adams.......September 6, 2008.
Paul Slichter