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Montana Field Guide

Montana Field Guides

Spreading Fleabane - Erigeron divergens

Native Species

Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

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General Description
Taprooted biennial or short-lived perennial. Stems erect, 10–40 cm, often branched at the base of a simple caudex. Herbage short-hirsute; hairs spreading or ascending. Leaves basal and cauline; blades obovate to oblanceolate, 1–5 cm long, entire; basal usually withered at flowering; cauline becoming sessile, linear above. Heads at least several, radiate, nodding in bud. Involucres hemispheric, 3–5 mm high; phyllaries in 3 to 4 series, glandular, hirsute with a brown midvein. Rays 70 to 150, white, 4–8 mm long. Disk corollas 2–3 mm long. Achenes ca. 1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC, AB south to CA, AZ, NM, TX and Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 48

(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
Grasslands, sagebrush steppe, open forest, roadsides; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • Douglass, R.J. 1973. Spatial interactions and microhabitat selections of two locally sympatric voles, Microtus montanus and Microtus pennsylvanicus. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 48 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Martinka, R.R. 1970. Structural characteristics and ecological relationships of male blue grouse (Dendragapus obscurus (Say)) territories in southwestern Montana. Ph.D Dissertation. Bozeman, MT: Montana State University. 73 p.
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Citation for data on this website:
Spreading Fleabane — Erigeron divergens.  Montana Field Guide.  .  Retrieved on , from