Original identification: Eupatorium occidentale
Current identification: Ageratina occidentalis
Photographer: Don Knoke
Date Photographed: June 28, 2007
Location: U.S.A., Washington, Kittitas County: Umtanum Canyon.
Elevation: [not provided]
Coordinates: [not provided]
Phenology: Flowers and Fruits
Voucher Specimen: Don Knoke 1341,