Potamogeton strictifolius Benn.
Annotated by D. Mansfield.

Oregon: Malheur County: Along Owyhee River about a mile upriver from Three Forks and just below Warm Springs. Elev. 3980 ft.
42° 31.84' N, 117° 11.06' W; T R 1/4 of 1/4 of 1/4 of sec
Coordinate Source: Specimen Label.
In a pond created by high water river channel, with Potamogeton strictifolius, P. nodosus, P. alpinus. P. foliosus, Heteranthera dubia, Scripus acutus, and Typha latifolia. Phenology: Fertile.

D. Mansfield 06-220, Jul 19, 2006
BLMVL, Accession: 5413