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Montana Field Guide

Montana Field Guides

Long-styled Rush - Juncus longistylis


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






 
General Description
Rhizomatous. Stems erect, terete, 20–80 cm. Leaves basal and cauline; blades flat, 1–2 mm wide; auricles truncate, 1–3 mm long. Inflorescence of 1 to 5 subcapitate clusters of 3 to 12 sessile flowers each, 6–15 mm across; main bract much smaller than the inflorescence; bracteoles numerous, silvery-membranous. Flowers: prophylls absent; tepals silvery with a green and brown mid-stripe, 4–6 mm long, acute; stamens 6. Capsules 3–5 mm long, rounded on top; seeds apiculate (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to NL south to CA, AZ, NM and NE (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 51

(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
Moist to wet meadows on margins of streams, fens, seeps, ponds, tolerant of alkali; valleys, montane, rarely higher (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Long-styled Rush — Juncus longistylis.  Montana Field Guide.  .  Retrieved on , from