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Montana Field Guide

Montana Field Guides

Chestnut Rush - Juncus castaneus


Global Rank: G5
State Rank: S3S4

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

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General Description
Rhizomatous. Stems erect, terete, 5–30 cm, not tufted. Leaves basal and cauline; blades channeled or folded, 1–3 mm wide; auricles absent. Inflorescence 1 to 3 clusters of 2 to 8 flowers each; main bract usually greater than the inflorescence. Flowers: prophylls absent; tepals purple or brown, 4–6 mm long, narrow, acute; stamens 6. Capsules 5–8 mm long, exserted, acutely tapered to the beak; seed appendages 0.5–1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Circumpolar south to NV, UT and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 8

(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
Wet, often gravelly soil in seepage areas in the alpine and subalpine zones.

References
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Citation for data on this website:
Chestnut Rush — Juncus castaneus.  Montana Field Guide.  .  Retrieved on , from