Penstemon attenuatus var. attenuatus

Plant Information
Species: 
attenuatus
Species Authority: 
Douglas ex Lindl.
Variety: 
attenuatus
Subgenus: 
Penstemon
Section: 
Penstemon
Subsection: 
Proceri
Habit:
 
herbaceous perennial
Habit Woodiness:
 
herb
Lifespan: 
long-lived
Plant Height - Min: 
3.00dm
Plant Height - Max: 
9.00dm
Habitat Description: 
Dry to moderately moist rocky slopes from sagebrush foothills to open subalpine woods and meadows. Openings in pine woods, Arid Transition Zone.
Distribution Range: 
Central Washington to Western Montana, south through Northeast Oregon and western Idaho. Type locality: Craig Mountains, Idaho.
Soil Type: 
Dry to moist soils.
Elevation - Min: 
1700.00m
Elevation - Max: 
2500.00m
Common Name: 
Taper-leaved Penstemon, Sulphur Penstemon
Other Notes: 

Varieties of Penstemon attenuatus are hypothesized to be of hybrid origin, with P. concertus involved with var. attenuatus and var. palustris. Penstemon albertinus may be involved in the origin of all varieties. Penstemon globosus may be involved in the formation of var. militaris. Penstemon attenuatus var. attenuatus has several different corolla color possibilities, including blues, purples, lavendar to pale pink, or yellow to white.

Photos by Andi Wolfe ©2016 - If you would like to use any of these photos, contact Andi Wolfe at Ohio State University

First Bloom: 
June
Last Bloom: 
August
Chromosome Number: 
2n = 24, 48
References: 

Holmgren NH. 1984. Penstemon and Keckiella. In Intermountain Flora, vol. 4. Ed. Arthur Cronquist et al. Bronx: The New York Botanical Garden. 

Hitchcock CL, Cronquist A. 1973. Penstemon. In Flora of the Pacific Northwest: University of Washington Press, Seattle.