Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada.
Habitat: Open, rocky areas, from middle to high elevations in the mountains.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, flies, wasps, hummingbirds
Perennial, forming dense mats with creeping, woody stems, and with scattered, erect flowering stems 0.5-1 dm. tall.
Mat leaves thick and firm, glabrous, entire or serrulate, short-petiolate, the blade 0.5-1.5 cm. long and 1 to 2.5 times as long as wide; cauline leaves few and small, often bract-like, less than 1 cm. long.
Inflorescence a compact, few-flowered raceme, glandular-hairy; calyx glabrous, 7-10 mm. long, the 5 segments thin and broadly lanceolate; corolla blue-lavender to purple-violet, 2-3.5 cm. long, keeled along the back, glabrous outside, hairy near the base of the lower lip within; anthers long-woolly, the pollen sacs opening wide enough to form a plane; staminode (fertile stamen) slender, shorter than the 4 fertile filaments, long-bearded toward the tip.
Capsule 8-10 mm. long
Publication: Pittonia 2(11): 241. 1892.
-
var. davidsonii – Davidson's beardtongue
Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada. -
var. menziesii – Davidson's beardtongue Occurring on both sides of the Cascades crest in Washington; British Columbia to California and Nevada.
PNW Herbaria: Specimen records of Penstemon davidsonii in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Penstemon davidsonii checklist entry.
OregonFlora: Penstemon davidsonii information.
E-Flora BC: Penstemon davidsonii atlas page.
CalPhotos: Penstemon davidsonii photos.
USDA Plants: Penstemon davidsonii information.
