Upper Newport Bay, Nature Ctr. to Jamboree, 7-12-12. © Ron Vanderhoff.

Western ragweed
(Cuman ragweed, perennial ragweed)

Ambrosia psilostachya

Native to California

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Live Oak Trail and E of Oso Rsvr., 11-17-11. © Ron Vanderhoff.

Just E Olympiad nr. Jeronimo, Mission Viejo, 11-30-14. © Ron Vanderhoff.

James Dilley Preserve, Laguna Beach, Orange County, CA. 9/4/2017. © Peter J. Bryant

James Dilley Preserve, Laguna Beach, Orange County, CA. 9/4/2017. © Peter J. Bryant

James Dilley Preserve, Laguna Beach, Orange County, CA. 9/4/2017. © Peter J. Bryant

James Dilley Preserve, Laguna Beach, Orange County, CA. 9/4/2017. © Peter J. Bryant

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