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Montana Field Guide

Montana Field Guides

Liddon Sedge - Carex petasata

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Densely caespitose. Stems erect, 15–60 cm. Leaves: basal blades absent; cauline blades 2–3 mm wide. Inflorescence of 3 to 6 sessile overlapping spikes; lowest bract inconspicuous. Spikes 8–18 mm long, all similar; bisexual; female flowers above male. Perigynia erect, green to tan, narrowly ovate, flattened, wing-margined, 5.5–7 × 2–2.5 mm, tapered to the indistinct beak, 1.5–2 mm long, serrulate below, entire above; stigmas 2. Female scales light brown with a pale midvein, concealing the perigynia. Achene 2-sided, smaller than the perigynium (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
AK south to CA, AZ and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 566

(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:
Liddon Sedge — Carex petasata.  Montana Field Guide.  .  Retrieved on , from