Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Blunt Sedge - Carex obtusata

Native Species

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

Agency Status


External Links

General Description
Rhizomatous. Stems erect, 3–15 cm, solitary. Leaves basal and lower-cauline; blades 0.5–2 mm wide. Inflorescence a solitary bractless spike. Spike narrow, 5–12 mm long; male flowered portion 3–8 mm long; female flowers below, few. Perigynia ovoid, ribbed, 2–3 mm long, purplish, with a distinct, entire, bidentate beak 0.5–1 mm long; stigmas 3. Female scales hyaline with a tan center, apiculate, nearly concealing the perigynia. Achene 3-sided, filling the perigynium (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Circumboreal south to UT, NM, SD and MN (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 135

(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)

Mesic grasslands, meadows, turf, fellfields; valleys to alpine, more common lower (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?
    • Aho, Ken Andrew. 2006. Alpine and Cliff Ecosystems in the North-Central Rocky Mountains. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 343 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Williams, K.L. 2012. Classification of the grasslands, shrublands, woodlands, forests and alpine vegetation associations of the Custer National Forest portion of the Beartooth Mountains in southcentral Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 376 p.
  • Web Search Engines for Articles on "Blunt Sedge"
Login Logout
Citation for data on this website:
Blunt Sedge — Carex obtusata.  Montana Field Guide.  .  Retrieved on , from