Sagittaria graminea Michx. var. graminea
[= Sagittaria graminea ssp. graminea]

Washington: Snohomish County: Southeast shore of Lake Roesiger, 14.6 air kilometers west northwest of Blue Mountain. Elev. 175 m
47.9805° N, 121.9155° W
Coordinate Source: Specimen Label.
Partial shade or full sun, mucky bottom, with Comarum, Carex obnupta, Spiraea, algae. Rhizomes narrow, submerged leaves 1-2.3 centimeters wide, emersed leaves, if present, narrowly elliptic, 1.5-4 centimeters wide, petiole round, channeled, fertile stems blunt triangular; common emergent or submerged aquatic.

Peter F. Zika 28088, Jul 14, 2016
WTU, Accession: 409845, Barcode: WTU-V-023810