Original identification: Polygonum achoreum
Current identification: Polygonum achoreum
Photographer: Craig Althen
Date Photographed: June 22, 2015
Location: U.S.A., Montana, Lincoln County: Lake Koocanusa.
Elevation: 2900 ft.
Coordinates: 48.907417° N, 115.153567° W
Phenology: Flowers