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Montana Field Guide

Montana Field Guides

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

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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

Observations in Montana Natural Heritage Program Database
Number of Observations: 9

(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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Management

References
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Citation for data on this website:
Bitter Dock — Rumex obtusifolius.  Montana Field Guide.  .  Retrieved on , from