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Montana Field Guide

Montana Field Guides

Mud Sedge - Carex limosa

Native Species

Global Rank: G5
State Rank: S3S4
C-value: 9

Agency Status


External Links

General Description
Long-rhizomatous with yellow roots. Stems erect, 12–40 cm. Leaves: basal bladeless; cauline blades 0.5–2 mm wide. Inflorescence of 2 or 3 well-separated spikes; the lowest bract shorter than the inflorescence. Spikes mostly unisexual; the uppermost male, linear, 10–35 mm long; the lower female, arching-pedunculate, 8–25 mm long, cylindric. Perigynia ascending, green to tan, elliptic, glabrous, 2–4 mm with a tiny beak; stigmas 3. Female scales ovate, coppery, acute to apiculate, ca. as long as the perigynia. Achene 3-sided, nearly 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 CA, NV, UT, WY, IA and NY (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 143

(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)

Wet, organic soils of fens in the montane zone.

  • 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.
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Citation for data on this website:
Mud Sedge — Carex limosa.  Montana Field Guide.  .  Retrieved on , from