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Montana Field Guide

Montana Field Guides

Retrorse Sedge - Carex retrorsa

Native Species

Global Rank: G5
State Rank: S4

Agency Status
MNPS Threat Rank:
C-value: 7

External Links

General Description
Rhizomatous. Stems erect, 20–70 cm. Leaves basal and cauline; blades 3–8 mm wide. Inflorescence of 4 to 7 subsessile to pedunculate spikes; the lowest bract much greater than the inflorescence. Spikes unisexual, ascending; the uppermost 1 to 3 male, linear, 1–5 cm long; the lower female, 1–5 cm long, cylindrical, subsessile to short-pedunculate. Perigynia spreading, the lowest reflexed, green to tan, broadly ovate, inflated, glabrous, 6–10 mm long, tapered to a beak 3–5 mm long; stigmas 3. Female scales acuminate, tan with hyaline margins, smaller than the perigynia. Achene 3-sided, much smaller than the perigynium (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
BC to QC south to OR, UT, WY, IL and NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 17

(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)


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Citation for data on this website:
Retrorse Sedge — Carex retrorsa.  Montana Field Guide.  .  Retrieved on , from