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Montana Field Guide

Montana Field Guides

Torrey's Rush - Juncus torreyi

Native Species

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


Agency Status
USFWS:
USFS:
BLM:


 

External Links






 
General Description
Rhizomatous. Stems erect, terete, 15–60 cm from tuberous-thickened rhizomes. Leaves basal and cauline; blades terete, septate, 1–3 mm wide; auricles rounded, 1–2 mm long. Inflorescence of 1 to 10 heads each with 25 to 100 sessile flowers, 10–15 mm across; some heads clustered; main bract terete, ascending, greater than the inflorescence. Flowers: prophylls absent; tepals green to tan, 3–4 mm long, long-acuminate; inner shorter; stamens 6. Capsules 4–6 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
Throughout most of temperate North America (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 47

(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, margins of streams, ditches, ponds, often where saline or alkaline; plains, valleys, rarely higher (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.
    • 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.
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Citation for data on this website:
Torrey's Rush — Juncus torreyi.  Montana Field Guide.  .  Retrieved on , from