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Montana Field Guide

Montana Field Guides

Bitter Dock - Rumex obtusifolius
Other Names:  Broad-leaved Dock, Bluntleaf Dock

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Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Puberulent perennial. Stems erect, simple, 60–100 cm. Leaf blades ovate, cordate, the lower 10–25 cm long. Inflorescence a leafy-bracted panicle with ascending, interrupted, spike-like branches. Flowers perfect; outer tepals 2–3 mm long. Fruit 3–5 cm long; inner tepals triangular with basally toothed margins; a callosity on 1 to 2 tepals. Achenes brown, 2–3 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced into most of North America; native to Europe (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 12

(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
Disturbed banks and terraces of rivers, streams; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Management


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?
    • 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.
  • Web Search Engines for Articles on "Bitter Dock"
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Citation for data on this website:
Bitter Dock — Rumex obtusifolius.  Montana Field Guide.  .  Retrieved on , from