Oregon White Oak, Garry Oak
Quercus garryana var. garryana
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Upper (left) and lower (right) leaf surfaces of Oregon white oak as seen atop Castle Rock, Willamette National Forest........June 24, 2018.
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What may be Oregon white oak (based on the appearance of what appears to be a single trunk) as seen atop Grizzly Peak, Cascade-Siskiyou National Monument......October 14, 2019. If not, then this would be Brewer's oak (Quercus garryana var. breweri).
The photo above shows a close-up of the pinnately
lobed leaf of Oregon white oak as seen at 4100' at a DNR rock quarry atop the
ridge dividing the Cougar and Dairy Creek drainages at the southeastern corner
of Mt. Adams.........July 10, 2005.
The photo above shows a close-up of the pinnately lobed leaf
of Oregon white oak as seen at 4100' at a DNR rock quarry atop the ridge dividing
the Cougar and Dairy Creek drainages at the southeastern corner of Mt. Adams..........June
12, 2005. The glossy, upper leaf surface is shown at the left while the short-haired
ventral leaf surface is shown at right.
The photo above shows Oregon white oak as seen at about 4100' at a rock quarry
atop the ridge separating the Dairy Creek and Cougar Creek drainages at the
southeastern corner of Mt. Adams..........May 23, 2005.
Paul Slichter