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Montana Field Guide

Montana Field Guides

Knotted Rush - Juncus nodosus

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Native Species

Global Rank: G5
State Rank: S4
C-value: 5


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Rhizomatous. Stems erect, terete, 15–50 cm. Leaves basal and cauline; blades terete, septate, 0.5–2 mm wide; auricles rounded, ca. 1 mm long. Inflorescence open with erect to spreading branches and several clusters of 6 to 30 spreading flowers; main bract greater than the inflorescence. Flowers: prophylls absent; tepals green to light brown, 2.5–4 mm long, acuminate; subequal; stamens usually 6. Capsules 4–5 mm long, long-tapered to the beak; seeds apiculate (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
AK to NL south to AZ, NM, NE, OH and MD (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 52

(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 meadows, wet gravelly soil along streams, ponds, lakes; plains, valleys, rarely montane (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Eggers, M.J.S. 2005. Riparian vegetation of the Montana Yellowstone and cattle grazing impacts thereon. M.Sc. Thesis. Montana State University, Bozeman, MT. 125 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
    • Sater, S. 2022. The insects of Sevenmile Creek, a pictorial guide to their diversity and ecology. Undergraduate Thesis. Helena, MT: Carroll College. 242 p.
  • Web Search Engines for Articles on "Knotted Rush"
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Citation for data on this website:
Knotted Rush — Juncus nodosus.  Montana Field Guide.  .  Retrieved on , from