Original identification: Sonchus arvensis ssp. uliginosus
Current identification: Sonchus arvensis ssp. uliginosus
Photographer: Craig Althen
Date Photographed: August 18, 2010
Location: U.S.A., Montana, Flathead County: Big Mtn.
Elevation: 3100 ft.
Coordinates: 48.442417° N, 114.35185° W
Phenology: Flowers