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Montana Field Guide

Montana Field Guides

Tweedy's Fleabane - Erigeron tweedyi


Global Rank: G4
State Rank: S3S4

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

External Links






 
General Description
Taprooted perennial from a simple or short-branched caudex. Stems ascending to erect, 3–20 cm. Herbage densely white-strigose. Leaves basal and cauline; blades obovate to oblanceolate, 7–20 mm long, entire, becoming linear-oblanceolate above. Heads radiate, solitary. Involucres hemispheric, 3–6 mm high; phyllaries in 3 to 4 series, minutely glandular, densely strigose. Rays 20 to 50, blue; ligules 4–7 mm long. Disk corollas ca. 3 mm long. Achenes ca. 2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 30

(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
Stony, usually calcareous soil of sagebrush steppe, grasslands, woodlands; valleys to subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Tweedy's Fleabane — Erigeron tweedyi.  Montana Field Guide.  .  Retrieved on , from