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Montana Field Guides

Gray Hawksbeard - Crepis occidentalis

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Native Species

Global Rank: G5
State Rank: S4
C-value: 4


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Taprooted perennial. Stems erect, 8–30 cm. Herbage gray-tomentose; stems setose-glandular above. Leaf blades ovate to elliptic, 3–20 cm long, pinnately lobed ca. halfway to the midvein into runcinate, lanceolate, dentate segments. Heads 2 to 25. Involucre narrowly campanulate, 11–19 mm high; phyllaries linear-lanceolate, tomentose, usually black glandular-setose. Rays 10 to 40; ligules 10–15 mm long. Achenes brown, 3–7 mm long, narrowed above but not beaked (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

According to Lesica (2012), our plants appear to be be subspecies costata (A. Gray) Babc.& Stebbins

Species Range
Montana Range Range Descriptions

Native
 


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

Observations in Montana Natural Heritage Program Database
Number of Observations: 141

(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?
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 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.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
  • Web Search Engines for Articles on "Gray Hawksbeard"
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Citation for data on this website:
Gray Hawksbeard — Crepis occidentalis.  Montana Field Guide.  .  Retrieved on , from