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Montana Field Guide

Montana Field Guides

Rydberg's Beardtongue - Penstemon rydbergii

Status Under Review

Global Rank: G4G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

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General Description
Stems erect, 20–40 cm. Herbage glabrous to puberulent on the stem. Basal leaf blades oblanceolate to obovate, entire, 2–7 cm long. Stem leaves lanceolate to oblanceolate, 2–7 cm long, the lower petiolate. Inflorescence of 2 to 7 glabrous, dense verticillasters. Flowers: calyx 3–7 mm long; sepals obovate, erose and widely scarious-margined with an acuminate tip; corolla blue to violet, 11–16 mm long, glabrous; anthers glabrous, opening across their full length. Capsule 5–10 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
WA to MT south to CA, AZ and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 4

(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

References
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Citation for data on this website:
Rydberg's Beardtongue — Penstemon rydbergii.  Montana Field Guide.  .  Retrieved on , from