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Montana Field Guide

Montana Field Guides

Common Bog Arrow-grass - Triglochin maritima
Other Names:  Triglochin concinna

Native Species

Global Rank: G5
State Rank: S5

Agency Status
MNPS Threat Rank:
C-value: 8

External Links

General Description
Stems ascending to erect, 15–70 cm. Leaves 4–40 cm long. Flowers: tepals 1–2 mm long; pistils 6 (sometimes 3 aborted). Fruit erect, narrowly ovoid, 3–6 mm long on pedicels 2–4 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Circumboreal south to CA, NM, OH and NY; S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 127

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Wet, open, alkaline soil around ponds and springs in the valley zone.

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • 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. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Common Bog Arrow-grass — Triglochin maritima.  Montana Field Guide.  .  Retrieved on , from