Original identification: Sonchus arvensis ssp. uliginosus
Current identification: Sonchus arvensis ssp. uliginosus
Photographer: Craig Althen
Date Photographed: September 8, 2010
Location: U.S.A., Montana, Flathead County: Flathead County MT, Big Mtn.
Elevation: 4700 ft.
Coordinates: [not provided]
Phenology: Flowers