Original identification: Cirsium arvense
Current identification: Cirsium arvense
Photographer: Roger T. George
Date Photographed: May 16, 2016
Location: U.S.A., Washington, Clark County: Lacamas Prairie Natural Area Preserve
Elevation: 197 ft.
Coordinates: 45.646583° N, 122.459056° W
Uncertainty: 9 ft.
Datum: WGS 84
Coordinate Source: GPS
Phenology: Flowers