Original identification: Polygonum aviculare
Current identification: Polygonum aviculare
Photographer: Ron Bockelman
Date Photographed: June 21, 2013
Location: U.S.A., Washington, Kittitas County: Wild Horse Wind Facility (Puget Sound Energy).
Elevation: 3490 ft.
Coordinates: 47.04039° N, 120.21194° W
Comments: Penknife is 6 cm long. Crossarm on penknife shield is 4 mm long.
Voucher Specimen: Ron Bockelman 13-05, WTU Herbarium