Potamogeton pragrefillia
Annotated by David Giblin, 15 Nov 2018. Sources: Flora PNW, 2nd.

Washington: Spokane County: Three Springs Natural Area on the Spokane River.
47.723597° N, 117.379875° W,
Datum: WGS 84. Uncertainty: 30000 meters. Coordinate Source: Digital Map.
Growing with Juncus acuminatus, Salix lasiandra and Rorippa nasturtium-aquatica.

Kathy Ahlenslager 440, Jun 23, 1994
With Robert Bursik
WTU, Accession: 410967, Barcode: WTU-V-025312