Potamogeton filiformis Pers. var. filiformis
Annotated by D. Mansfield.

Oregon: Malheur County: About 2.5 miles above Three Forks of the Owyhee River by cliffs on the east bank of the river. Elev. 3800 ft.
42° 32' N, 117° 11' W; T35S R45E SE of NW 1/4 Sec. 10
Coordinate Source: Specimen Label.
Submerged in slow water, with Potamogeton robbinsii, Elodea canadensis, Ceratophyllum demersum and Nitella. Phenology: Fertile.

D. Mansfield 01-259, Jul 12, 2001
BLMVL, Accession: 5377