Alpine Pondweed, Northern Pondweed, Reddish Pondweed
Potamogeton alpinus
Synonyms: Potamogeton alpinus ssp. tenuifolius, Potamogeton alpinus var. subellipticus, Potamogeton alpinus var. tenuifolius, Potamogeton tenuifolius, Potamogegon tenuifolius var. subellipticus
The photo above shows a close-up of the inflorescence of alpine pondweed as seen in a small stream that runs through Swampy Meadows on the western slopes of Mt. Adams.........September 6, 2008.
- 
The photo above shows a close-up of the inflorescence of alpine pondweed as seen in a small stream that runs through Swampy Meadows on the western slopes of Mt. Adams...........September 6, 2008.
The photo above shows a close-up of the submergedstem leaves of alpine pondweed as seen in a small stream that runs through Swampy Meadows on the western slopes of Mt. Adams.........September 6, 2008. The leaves of this species are all similar in shape.
Paul Slichter