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Montana Field Guide

Montana Field Guides

Russet Cotton-grass - Eriophorum chamissonis


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 9

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General Description
Rhizomatous. Stems 15–60 cm. Leaves: upper leaf blades rudimentary; lower blades V-shaped or trinagular in cross-section, 1–2 mm wide. Inflorescence a solitary, erect spikelet; bracts absent. Spikelets 15–35 mm long in fruit; lowest scale lanceolate, shorter than the spikelet. Fertile scales brown to black with pale margins, 4–7 mm long. Bristles becoming tawny-brown. Achene 2–3 mm long, apiculate (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 33

(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
Organic soil of fens, wet meadows; valleys to lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Russet Cotton-grass — Eriophorum chamissonis.  Montana Field Guide.  .  Retrieved on , from