Page authors: David Giblin, Don Knoke
Penstemon pennellianus
Blue Mountains beardtongue, Pennell's beardtongue

Distribution: Occurring east of the Cascades crest in the Blue Mountains of southeastern Washington; southeastern Washington to Blue Mountains in adjacent northeastern Oregon.

Habitat: Open, gravelly and sandy slopes and ridges, sometimes associated with ponderosa pine forest openings, at middle elevations.

Flowers: May-June

Origin: Native

Conservation Status: Sensitive in Washington (WANHP)


Glabrous perennial from a branched crown, with several stout stems 2-6 dm. tall.


Leaves opposite, entire, the basal ones clustered, up to 27 cm. long and 4 cm. wide, petiolate, the blade lanceolate or narrowly elliptic; cauline leaves mostly sessile, broad and clasping.


Inflorescence of several verticillasters; calyx 5-cleft nearly to the base, 6-9 mm. long, the segments narrow and acuminate; corolla bilabiate, bright blue, 25-33 mm. long, about 1 cm. wide at the mouth, glabrous; pollen sacs 1.9-2.5 mm. long, divaricate, twisted, dentate along the sutures, the inner end indehiscent; fertile stamens 4; sterile stamen short-bearded toward the tip.


Capsule 9-12 mm. long.

Accepted Name:
Penstemon pennellianus D.D. Keck
Publication: American Midland Naturalist 23(3): 614-615. 1940.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Penstemon pennellianus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Penstemon pennellianus checklist entry.

E-Flora BC: Penstemon pennellianus atlas page.

CalPhotos: Penstemon pennellianus photos.

USDA Plants: Penstemon pennellianus information.

16 photographs:
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