Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Globe Beardtongue - Penstemon globosus


Global Rank: G4
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

External Links






 
General Description
Globe Beardtongue is a glabrous, herbaceous perennial with tufted stems that are 2-6 dm tall and arising from a shallow, branched, woody rootcrown. The narrowly elliptic, basal leaves are up to 15 cm long and have petioles and entire margins. The opposite stem leaves are shorter, more elliptic, and lack petioles. The inflorescence consists of 1-3 dense clusters of short-stalked flowers surrounding the upper portion of the stem at intervals of 1-5 cm. The blue, tubular corolla is 15-20 mm long and is flared and 2-lipped at the mouth. The 5 lance-shaped sepals are 5-8 mm long and usually have broad, white, wavy margins. The anthers are glabrous, and the 2 sacs do not open entirely at their spreading tips.

Phenology
Flowering at end of July.

Diagnostic Characteristics
The combination of crowded bluish flowers, glabrous inflorescence, and anthers and anther sacs that remain closed at the tips help distinguish this species from others in the area. Penstemon procerus has smaller flowers, and P. rydbergii has anther sacs that open fully. A hand lens may be required for identification.

Species Range
Present
 


Range Comments
Central and northern ID, southwestern MT, and northeastern OR.

Summary of Observations Submitted for Montana
Number of Observations: 21

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Moist meadows in the montane and lower subalpine zones.

Ecological Systems Associated with this Species

References
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Clark, D.V. 1971. Speciation in Penstemon (Scrophulariaceae). Ph.D dissertation. University of Montana, Missoula. 169 pp.
    • Heidel, B. L. 1996. Noteworthy collections - Montana. Madrono 43(3):436-440.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Strickler, D. 1997. Northwest penstemons. Flower Press, Columbia Falls, Montana. 191 pages.
  • Web Search Engines for Articles on "Globe Beardtongue"
  • Additional Sources of Information Related to "Dicots"
Login Logout
Citation for data on this website:
Globe Beardtongue — Penstemon globosus.  Montana Field Guide.  .  Retrieved on , from