Page author: David Giblin
Quercus garryana
Garry oak, Oregon white oak
WTU specimens
Other herbaria

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

Flowers: April - June

Origin: Native

Conservation Status: Not of concern


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 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.


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.


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.

Accepted Name:
Quercus garryana Douglas ex Hook.
Publication: Fl. Bor.-Amer. 2: 159. 1840.

Synonyms & Misapplications:
(none provided)
var. garryana – Garry oak, Oregon white oak
Additional Resources:

PNW Herbaria: Specimen records of Quercus garryana in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Quercus garryana checklist entry.

E-Flora BC: Quercus garryana atlas page.

CalPhotos: Quercus garryana photos.

USDA Plants: Quercus garryana information.

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