Original identification: Lactuca serriola
Current identification: Lactuca serriola
Photographer: Ron Bockelman
Date Photographed: September 16, 2011
Location: U.S.A., Washington, Columbia County: Umatilla NF Middle Point Ridge Trail No. 3116, Blue Mountains.
Elevation: 3555 ft.
Coordinates: 46.14425°, -117.80275°
Phenology: Flowers