Original identification: Cyperus erythrorhizos
Current identification: Cyperus erythrorhizos
Photographer: Gerald D. Carr
Date Photographed: October 22, 2014
Location: U.S.A., Oregon, Benton County: in muddy bottom of drained pond, E.E. Wilson Game Management Area, ca. 7 mi. N of Corvallis [R. Halse 9300].
Elevation: 212 ft.
Coordinates: 44.708° N, 123.20763° W