Page authors: Don Knoke, David Giblin
Penstemon richardsonii
Richardson's penstemon
Specimens
Photos

Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to north-central and northeast Oregon.

Habitat: Cliff crevices and other dry, rocky places at low to moderate elevations.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies, wasps, hummingbirds

Description:
General:

Taprooted perennial, shrubby at the base, the several brittle, slender stems 2-8 dm. tall, puberulent, the inflorescence glandular-hairy and the leaves often glabrous.

Leaves:

Leaves opposite, all cauline, the lower reduced and short-petiolate, the others sessile, sharply serrate-dentate to irregularly pinnatifid, up to 7 cm. long and 3 cm. wide.

Flowers:

Inflorescence a terminal panicle, leafy-bracteate below; calyx 4-8 mm. long, the 5 segments green or purplish, mostly entire, often unequal; corolla bright lavender to purplish-red, glandular-hairy outside, mostly glabrous within, 22-32 mm. long, over 1 cm. wide at the mouth, strongly bilabiate, the upper lip cleft nearly half its length; anthers 1.3-1.7 mm. long, permanently horseshoe shaped, the pollen sacs saccate and indehiscent below; staminode shortly exerted, long-bearded toward the tip, or glabrous.

Fruits:

Capsule 5-8 mm. long

Accepted Name:
Penstemon richardsonii Douglas ex Lindl.
Publication: Bot. Reg. 13: t. 1121. 1828.

Synonyms & Misapplications:
(none provided)
Infraspecies:
Additional Resources:

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

WA Flora Checklist: Penstemon richardsonii checklist entry.

OregonFlora: Penstemon richardsonii information.

E-Flora BC: Penstemon richardsonii atlas page.

CalPhotos: Penstemon richardsonii photos.

USDA Plants: Penstemon richardsonii information.

59 photographs:
Group by