Vascular Plants - Fagaceae - Quercus:
Quercus garryana
Page Author: David Giblin
Oregon white oak, Garry oak 
Blooms: April - June
Habit: tree
Duration: perennial
Origin: Native
Distribution: West of the Cascades, Vancouver Island to California; eastern foothills of the Cascades from Kittitas County south to the Columbia River
Habitat: Dry prairies and foothills to rocky bluffs
Species Description:

General: Deciduous tree 10-20 m. tall, the trunk up to 1 m. in diameter with thick, furrowed and scaly bark; young growth with reddish pubescence.
Leaves: Leaves alternate, the blades broadly oblong to obovate in outline, bright green on the upper surface, paler and yellowish-pubescent beneath, 5-12 cm. long, deeply lobed to sub-pinnatifid, the lobes 3-7 per side, entire or bluntly 2- or 3-toothed; petioles 1-2 cm. long.
Flowers: Plants monoecious; staminate flowers in lax catkins, 1 per node in the axils of early-deciduous bracts; perianth 6-lobed half its length; stamens 6-10; pistillate flowers single or clustered, each surrounded by a scaly, cup-like involucre; ovary inferior; styles 3.
Fruits: Involucre hardens into a shallow cup, up to 2 cm. broad and 1 cm. deep, holding the ovoid to sub-globose acorn, 2-3 cm. long.
Subspecies & Varieties:
Accepted Name:
Quercus garryana Dougl.
Synonyms:
(none)

Treated in Flora of the PNW as:
Quercus garryana
Additional Resources:

PNW Herbaria Specimens: View list of all Quercus garryana specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Quercus garryana specimens in the WTU Herbarium database.

Washington Flora Checklist: Quercus garryana treatment.

E-Flora BC: Quercus garryana atlas page.

CalPhotos: Quercus garryana images.

USDA Plants Database: Quercus garryana.
Additional photographs of Quercus garryana:
(click on a thumbnail to view larger photo)

Clayton J. Antieau, 1983

Clayton J. Antieau, 1994

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Clayton J. Antieau, 2004

Ben Legler, 2003

Ben Legler, 2005

H. Tim Gladwin, 1988

H. Tim Gladwin, 1988

Shaun Hubbard, 2004

Shaun Hubbard, 2005

Shaun Hubbard, 2005

Shaun Hubbard, 2006

Shaun Hubbard, 2004

Shaun Hubbard, 2004

Shaun Hubbard, 2005

Shaun Hubbard, 2004

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

Don Knoke, 2008

Rod Gilbert , 2005

Rod Gilbert , 2006

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

Regina Johnson, 2011

Robert L. Carr , 2014

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016
(password required)

Burke Museum


©2017 Burke Museum of Natural History and Culture.
All Rights Reserved. Box 353010, University of Washington,
Seattle, WA 98195-3010, Phone: 206-543-5590.
On the UW campus at 17th Avenue NE and NE 45th Street.
Washington Native Plant Society
WA Native Plant Society