Harison's Rose, Pioneer Rose
Rosa xharisonii

What may be of pioneer rose as seen at the northeastern base of Steptoe Butte where evidently there was once an old homestead........June 22, 2009.
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Additional close-up views of the flowers, calyx, leaf and prickles of pioneer rose as seen at the northeastern base of Steptoe Butte where evidently there was once an old homestead......June 22, 2009.
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Additional close-up views of Harison's rose as seen along Oregon Highway 218 several miles of Camp Hancock.........May 16, 2010.
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Close-ups of the prickles and flowers of pioneer rose as seen at an old homestead above the Klickitat River in the Klickitat State Wildlife Area in south-central Washington........May 31, 2009.

A large cluster of pioneer rose as seen at an old homestead above the Klickitat River in the Klickitat State Wildlife Area in south-central Washington..........May 31, 2009.
Paul Slichter