Page authors: Don Knoke, David Giblin
Phacelia hastata
silverleaf phacelia, whiteleaf phacelia
WTU specimens
Other herbaria
WTU images

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains.

Habitat: Dry, open, often sandy areas, low to high elevations.

Flowers: May-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Herbaceous perennial from a taproot, the several stems sub-erect, up to 5 dm. tall, silvery with fine, loose pubescence.

Leaves:

Leaves prominently veined, all entire or some with small lateral lobes at the base; basal leaves tufted, persistent, petiolate, narrowly to broadly elliptic, cauline leaves reduced upward, becoming sessile.

Flowers:

Inflorescence short and compact; calyx divided nearly to the base, lobes 5; corolla dull white, 5-lobed, 4-7 mm. long and broad, the filaments conspicuously exerted, hairy near the middle; style 2-cleft.

Fruits:

Fruit a capsule.

Accepted Name:
Phacelia hastata Douglas ex Lehm.

Synonyms & Misapplications:
(none provided)
Infraspecies:
var. compacta – silverleaf phacelia, whiteleaf phacelia    Occurring on both sides of the Cascades crest in Washington; northern Washington to California, east to Nevada.
var. hastata – silverleaf phacelia, whiteleaf phacelia    Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
var. leptosepala – narrow-sepal scorpion-weed    Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Alberta, western Montana, and central Idaho.
Additional Resources:

PNW Herbaria: Specimen records of Phacelia hastata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Phacelia hastata checklist entry.

E-Flora BC: Phacelia hastata atlas page.

CalPhotos: Phacelia hastata photos.

USDA Plants: Phacelia hastata information.

104 photographs:
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