Page author: David Giblin
Ceanothus integerrimus

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.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies, beetles


Deciduous, glabrous to pubescent shrubs, the stems 1-4 m. tall, erect or spreading.


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.


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.


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.
Publication: Bot. Beechey Voy. 329. 1838.

Synonyms & Misapplications:
Ceanothus andersonii Parry
Ceanothus californicus Kellogg
Additional Resources:

PNW Herbaria: Specimen records of Ceanothus integerrimus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Ceanothus integerrimus checklist entry.

OregonFlora: Ceanothus integerrimus information.

E-Flora BC: Ceanothus integerrimus atlas page.

CalPhotos: Ceanothus integerrimus photos.

USDA Plants: Ceanothus integerrimus information.

34 photographs:
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