Native to Idaho, Montana, Oregon, Washington, Wyoming (source: POWO). Flora of the World documents 6 occurrences across 1 country.
Penstemon attenuatus
var. attenuatus
var. militaris
var. pseudoprocerus
Distribution from Plants of the World Online (POWO). View the accepted name on POWO
Identified as
Penstemon attenuatus var. attenuatus
Location
United States, Idaho, Adams (New Meadows)
45.189778, -116.304556
Location Remarks
Hwy 55 along the Little Salmon River. Ca. 19 km S of Pollock. Coarse basalt gravel on roadside turnout above the river. 976 m elev.
Collectors
Identified as
Penstemon attenuatus var. pseudoprocerus
Location
United States, Idaho, Valley (Cascade)
44.158, -116.118361
Location Remarks
Highway 55 c. 10 km north of the bridge at Banks. Mixed conifer forest along the N. Fork Payette River.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Rocky, gravelly roadside slope.
Location
United States, Idaho, Idaho (McCall)
45.244, -115.588639
Location Remarks
1.9 km N of Warren Summit on FSR 340, at Mayflower Creek Bridge. Elev. 1904 m.
Collectors
No collectors specified
Location
United States, Idaho, Benewah (Saint Maries)
47.3545, -116.376944
Location Remarks
Reeds Gulch Rd. to FSR 550, to the N of Calder-Avery Rd. (=NF 50). 9.8 km toward Baldy Peak. Elev. 1238 m.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Sunny, grassy creekside in Doug fir forest.
Identified as
Penstemon attenuatus var. militaris
Location
United States, Idaho, Adams (New Meadows)
45.189778, -116.304556
Location Remarks
Hwy 55 along the Little Salmon River. Ca. 19 km S of Pollock. Coarse basalt gravel on roadside turnout above the river. 976 m elev.
Collectors
Location
United States, Idaho, Idaho (McCall)
45.244, -115.588639
Location Remarks
1.9 km N of Warren Summit on FSR 340, at Mayflower Creek Bridge. Elev. 1904 m.
Collectors
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Lamiales
Family
Plantaginaceae
Genus
Penstemon
Specific Epithet
attenuatus
Authorship
Douglas
What is EDGE?
Evolutionary distinctiveness
Lower
ED 0.3
Part of a well-represented branch of the plant tree of life, with many close relatives.
Threat status
Modelled estimate
EDGE score
0.0
Global rank
#310,421 of 335,497
Top 93%
Extinction probability
12%