Original identification: Ambrosia artemisiifolia
Current identification: Ambrosia artemisiifolia
Photographer: Craig Althen
Date Photographed: August 10, 2013
Location: U.S.A., Colorado, Jefferson County: Willow Springs.
Elevation: 6100 ft.
Coordinates: 39.6126° N, 105.179517° W
Phenology: Flowers