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Montana Field Guide

Montana Field Guides

Slender Spikerush - Eleocharis elliptica
Other Names:  Eleocharis tenuis, Eleocharis compressa [in part]


Global Rank: G5
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

External Links






 
General Description
Rhizomatous perennial. Stems erect, 10–40 cm with purple sheaths, tufted. Spikelet 3–8 mm long with 10 to 30 flowers. Scales 2–3 mm long, brown to purple with hyaline margins, the lowest larger, sterile, rounded. Flowers: bristles absent or reduced; stigmas 3. Achenes yellow, honeycombed, obovate, 1–1.5 mm long; tubercle triangular, 0.1–0.2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Lesica (2012) treats this species as Eleocharis tenuis (Willd.) Schult. variety borealis (Svenson) Gleason

Species Range
Present
 


Range Comments
BC to QC south to MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 30

(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
Fens, moist alkaline meadows around ponds, streams; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Slender Spikerush — Eleocharis elliptica.  Montana Field Guide.  .  Retrieved on , from