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Montana Field Guide

Montana Field Guides

Dark-blue Beardtongue - Penstemon cyaneus

Status Under Review

Global Rank: G5
State Rank: SNR

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

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General Description
Stems erect, 20–60 cm. Herbage glabrous, often glaucous. Basal leaf blades lanceolate to oblanceolate, entire, 3–12 cm long. Stem leaves linear-lanceolate to narrowly ovate, 3–10 cm long, clasping the stem. Inflorescence crowded, of 3 to 10 open, glabrous verticillasters. Flowers: calyx 4–6 mm long; sepals ovate with rounded but erose tips, scarious-margined; corolla blue, 24–30 mm long; anthers hispid, twisted, not opening near the filament. Capsule 10–13 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Endemic to southern ID, adjacent MT and WY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat
Sagebrush steppe, grasslands, often on roadcuts; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Dark-blue Beardtongue — Penstemon cyaneus.  Montana Field Guide.  .  Retrieved on , from