Common Cocklebur
Xanthium strumarium
The photo above shows common cocklebur on the beach at Dalton Point in the western Columbia River Gorge.............................September 1, 2007.
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Common cocklebur as seen on the west bank of the Deschutes River at its mouth.......................October 7, 2006.
Common cocklebur as seen along the edges of a small pond at the east side of the Sandy River Delta, Troutdale, Oregon............September 8, 2012.
Paul Slichter