[Pondweeds: The Genus Potamogeton East of the Cascade Mountains of Oregon and Washington]

Two images of the floating leaves and spike of floating pondweed as seen in a canal along the Willard Springs Trail at Conboy Lake NWR........August 17, 2007. The base of the leaves of this species are rounded to cordate (heart-shaped) as seen here.

Close-ups of the floating leaves of floating pondweed as seen in the central canal through Conboy Lake NWR as seen at Kreps Lane.......July 31, 2008.