Original identification: Sonchus uliginosus
Current identification: Sonchus arvensis ssp. uliginosus
Photographer: Don Knoke
Date Photographed: September 19, 2005
Location: U.S.A., Washington, Kittitas County: Thorp Ice Pond, near North Thorp Highway, Thorp.
Elevation: [not provided]
Coordinates: [not provided]
Phenology: Vegetative
Voucher Specimen: Don Knoke 976, WTU Herbarium