Search Field Guide
Advanced Search
MT Gov Logo
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: 7

(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.

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Joslin, G.J. 1975. Behavior and environmental selection by Elk (Cervus canadensis nelsoni) during surrmer and fall in the First and Second Yellow Mule drainages, Madison County, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University, Bozeman. 65 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Saunders, J.K., Jr. 1954. A two-year investigation of the food habits and range use of the Rocky Mountain goat in the Crazy Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 22 p.
    • Wiman, N.G. 2001. Dynamics of leafy spurge (Euphorbia esula L.) infested plant communities influenced by flea beetles in the Aphthona complex (Colepotera: Chrysomelidae). M.Sc. Thesis. Bozeman, MT: Montana State University. 148 p.
  • Web Search Engines for Articles on "Beautiful Fleabane"
Login Logout
Citation for data on this website:
Beautiful Fleabane — Erigeron formosissimus.  Montana Field Guide.  .  Retrieved on , from