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Montana Field Guide

Montana Field Guides

Slender Beardtongue - Penstemon gracilis

Status Under Review
Native Species

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Stems erect, 15–50 cm. Herbage glabrous to puberulent on the stem. Basal leaf blades oblanceolate, remotely denticulate, 2–6 cm long. Stem leaves narrowly lanceolate, 2–8 cm long, clasping, denticulate. Inflorescence of 3 to 5 verticillasters, glandular-pubescent. Flowers: calyx 5–6 mm long; sepals lanceolate, barely scarious; corolla blue to pale violet, 14–20 mm long, glandular; anthers glabrous, opening across their full length. Capsule 4–8 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
BC to ON south to NM, CO and NE (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 14

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



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


  • Additional ReferencesLegend:   View Online Publication
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    • 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.
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Citation for data on this website:
Slender Beardtongue — Penstemon gracilis.  Montana Field Guide.  .  Retrieved on , from