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Montana Field Guide

Montana Field Guides

Beautiful Fleabane - Erigeron formosissimus

Species of Concern
Native Species

Global Rank: G5
State Rank: S1S3
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Species has been documented for southern Montana from a few collections. Additional data are needed for this species to more precisely determine its conservation status and need.
General Description
Fibrous-rooted perennial from a short rhizome. Stems ascending, 10–40 cm. Herbage glabrate to sparsely villous-hirsute, glandular above. Leaves basal and cauline; blades oblanceolate to oblong, 2–8 cm long, entire, sessile, lanceolate above. Heads 1 or few, radiate. Involucres hemispheric, 5–8 mm high; phyllaries in 2 to 3 series, minutely stipitate-glandular. Rays 75 to 150, pink to purple; ligules 8–15 mm long. Disk corollas 3–5 mm long. Achenes ca. 2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Flowering July-September.

Species Range

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

Observations in Montana Natural Heritage Program Database
Number of Observations: 6

(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)

Meadows and forest openings in the montane and subalpine zones.

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Citation for data on this website:
Beautiful Fleabane — Erigeron formosissimus.  Montana Field Guide.  .  Retrieved on , from