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Montana Field Guide

Montana Field Guides

Big-head Evax - Evax prolifera
Other Names:  Diaperia prolifera, Filago prolifera

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Status Under Review
Native Species

Global Rank: G5
State Rank: SU
C-value:


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Gray-woolly, taprooted annual. Stems erect, 2–10 cm, simple or branched at the base. Leaves: basal small, deciduous; cauline alternate, oblanceolate, entire, 3–15 mm long. Inflorescence terminal, wooly glomerules of sessile heads closely subtended by leaves. Heads disciform; involucre absent; receptacle conical, chaffy. Disk flowers tubular, minute; the outer female; inner functionally male. Pappus absent. Achenes oblong, compressed, <1 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
MT south to NM, TX, LA and AL. Known from Custer and Powder River counties (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(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

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Big-head Evax"
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Citation for data on this website:
Big-head Evax — Evax prolifera.  Montana Field Guide.  .  Retrieved on , from