Entire-leaf Goldenweed - Pyrrocoma integrifolia
(see State Rank Reason below)
State Rank Reason (see State Rank above)
Pyrrocoma integrifolia commonly occurs in southwest Montana and adjacent counties.
- Details on Status Ranking and Review
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
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.
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
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:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
- 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.