Page author: Don Knoke
Phacelia minutissima
least phacelia, dwarf scorpion-weed
WTU specimens
Other herbaria

Distribution: Uncommon; known from the type locality in Idaho, the Wallowa Mountains of Oregon, Elko County, Nevada, and Kittitas County, Washington.

Habitat: Moderate elevations in the mountains.

Flowers: July

Origin: Native

Conservation Status: Critically Imperiled in Washington (WANHP)


Dwarf, branching annual, the stem up to 1 dm. tall, the herbage with short, spreading hairs and stalked glands throughout.


Leaves oblanceolate to linear-oblong, the blade up to 1 cm. long and 4 mm. wide, tapering to a petiole up to 4 mm. long.


Inflorescence short, few-flowered; calyx 2.5-3 mm. long, the 5 segments linear and unequal in length, one sometimes foliaceous and 1 cm. long; corolla lavender, 2.5-4 mm. long; stamens not exerted; style 1 mm. long.


Fruit a capsule, seeds about a dozen.

Accepted Name:
Phacelia minutissima L.F. Hend.
Publication: Bull. Torrey Bot. Club 27(6): 351. 1900.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Phacelia minutissima checklist entry.

E-Flora BC: Phacelia minutissima atlas page.

CalPhotos: Phacelia minutissima photos.

USDA Plants: Phacelia minutissima information.

5 photographs:
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