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Montana Field Guide

Montana Field Guides

Rydberg's Fleabane - Erigeron rydbergii


Global Rank: G4
State Rank: S4

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

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General Description
Taprooted perennial with a short-branched caudex. Stems erect, 2–7 cm. Herbage usually sparsely villous, eglandular. Leaves mostly basal; blades narrowly oblanceolate, entire, 1–2 cm long, becoming linear on the stem. Heads solitary, radiate. Involucres campanulate, 5–7 mm high; phyllaries in 2 or 3 series, villous with septate hairs, eglandular. Rays 15 to 35, blue; ligules 4–9 mm long. Disk corollas 3–4 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 WY and ID (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 1

(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 non-calcareous soil of fellfields, turf, open forest; upper subalpine, alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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