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Montana Field Guides

Entire-leaf Goldenweed - Pyrrocoma integrifolia
Other Names:  Haplopappus integrifolius

Native Species

Global Rank: G4
State Rank: S4
(see State Rank Reason below)
C-value: 4

Agency Status


External Links

State Rank Reason (see State Rank above)
Pyrrocoma integrifolia commonly occurs in southwest Montana and adjacent counties.
  • Details on Status Ranking and Review
    Entire-leaf Goldenweed (Pyrrocoma integrifolia) Conservation Status Review
    Review Date = 09/06/2017
    View State Conservation Rank Criteria
    Range Extent

    ScoreF - 20,000-200,000 sq km (~8,000-80,000 sq mi)

    Area of Occupancy

    ScoreE - 26-125 4-km2 grid cells

    Number of Populations

    ScoreD - 81 - 300

    Number of Occurrences or Percent Area with Good Viability / Ecological Integrity

    ScoreD - Some (13-40) occurrences with excellent or good viability or ecological integrity

    Environmental Specificity

    ScoreC - Moderate. Generalist or community with some key requirements scarce


    ScoreD - Low

    CommentThreat category includes: Invasive non-native/alien species/diseases. Plants are palatable to sheep, but this is assumed to not be a threat to populations.

General Description
Stems ascending, 7–50 cm, glabrate to sparsely villous. Leaf blades oblanceolate to narrowly elliptic, entire, 3–15 cm long, glabrous, becoming sessile above. Heads radiate, solitary or few, reduced in size below; involucre hemispheric, 1–2 cm high; phyllaries in 2 to 3 series, oblanceolate, ciliate, green above. Rays 18 to 45; ligules 7–18 mm long. Disk corollas 6–10 mm long. Achenes 5–7 mm long, glabrous (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
Endemic to southwest MT, adjacent ID and WY (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 105

(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)

Moist, often calcareous soil of meadows, grasslands; valleys, montane (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • 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?
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • 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.
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Citation for data on this website:
Entire-leaf Goldenweed — Pyrrocoma integrifolia.  Montana Field Guide.  .  Retrieved on , from