Vascular Plants - Rhamnaceae - Ceanothus:
Ceanothus integerrimus
Page Author: David Giblin
deerbrush 
Blooms: May-July
Habit: shrub
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: East of the Cascades in Washington along and near the Columbia; Washington south to Baja California.
Habitat: Dry, open forests and open areas at low to moderate elevations.
Species Description:

General: Deciduous, glabrous to pubescent shrubs, the stems 1-4 m. tall, erect or spreading.
Leaves: Leaves alternate, petiolate, the leaf blades thin, entire, 1.5-6 cm. long, oblong to ovate, usually puberulent on the lower surface, with 3 prominent veins from the base; stipules brownish, linear-lanceolate, 3-7 mm. long.
Flowers: Inflorescence of large panicles terminal on young branches; calyx 5-lobed; petals 5, long-clawed, hooded, white to blue; stamens 5, opposite the petals, separated from the pistil by a flat, lobed disk, which also embeds the ovary; style 1, stigmas 3.
Fruits: Capsules 5-7 mm. long, separating into 3 carpels at maturity, these with elliptic, low crests about mid-length.
Accepted Name:
Ceanothus integerrimus Hook. & Arn.
Synonyms:
Ceanothus andersonii Parry
Ceanothus californicus Kellogg

Treated in Flora of the PNW as:
Ceanothus integerrimus
Additional Resources:

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

WTU Herbarium Specimens: View list of Ceanothus integerrimus specimens in the WTU Herbarium database.

Washington Flora Checklist: Ceanothus integerrimus treatment.

E-Flora BC: Ceanothus integerrimus atlas page.

CalPhotos: Ceanothus integerrimus images.

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

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Clayton J. Antieau, 1990

Clayton J. Antieau, 1990

Dana Visalli

G. D. Carr, 2007

G. D. Carr, 2007

G. D. Carr, 2007

G. D. Carr, 2007

Rod Gilbert , 2005

Robert L. Carr, 2015

Robert L. Carr, 2015

Robert L. Carr, 2015

Robert L. Carr, 2015
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Washington Native Plant Society
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