Page author: David Giblin
Penstemon acuminatus
sand dune penstemon, sharp-leaved penstemon
WTU specimens
Other herbaria

Distribution: Douglas County south to Klickitat Count, east to Franklin County; Washington south to Wasco County, Oregon, also in southeastern Oregon and adjacent southwestern Idaho.

Habitat: Dry, open, sandy places at low elevations.

Flowers: April-June

Origin: Native

Conservation Status: Not of concern

Description:
General:

Herbaceous, glabrous perennial from a short, branched woody base, with several stout stems 1.5-6 dm. tall, the herbage glaucous.

Leaves:

Leaves opposite, thick and firm, the basal leaves tufted, oblanceolate, up to 15 cm. long and 2 cm. wide; cauline leaves sessile and clasping, progressively shorter and broader upward.

Flowers:

Inflorescence of rather dense verticillasters, the bracts subtending the lower verticillasters broad and leafy, the upper ones reduced; calyx deeply 5-parted, the segments lanceolate, entire; corolla bright blue, tubular, 14-21 mm. long, the tube expanded toward the end; pollen sacs glabrous, dehiscent throughout and becoming opposite, 0.8-1.2 mm. long; staminode (sterile stamen) usually yellow-bearded for about 1 mm. toward the tip.

Fruits:

Capsule 7-12 mm. long, excluding the slender beak, which is up to 5 mm. long.

Accepted Name:
Penstemon acuminatus Douglas ex Lindl.

Synonyms & Misapplications:
(none provided)
Infraspecies:
var. acuminatus – sand dune penstemon, sharp-leaved penstemon
Additional Resources:

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

WA Flora Checklist: Penstemon acuminatus checklist entry.

E-Flora BC: Penstemon acuminatus atlas page.

CalPhotos: Penstemon acuminatus photos.

USDA Plants: Penstemon acuminatus information.

20 photographs:
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