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Montana Field Guide

Montana Field Guides

Marsh Cinquefoil - Comarum palustre
Other Names:  Potentilla palustris


Global Rank: G5
State Rank: S4
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

External Links






State Rank Reason (see State Rank above)
Fairly common in montane to subalpine wetlands and fens, primarily in northwest Montana
 
General Description
Rhizomatous perennial. Stems ascending, prostrate, or floating, reddish, glabrous to sparsely glandular, 20–50 cm. Leaves sheathing-petiolate, pinnately divided into 3 to 7 leaflets; leaflets oblong, sparsely hairy, glaucous beneath, dentate, 2–7 cm long. Inflorescence a leafy, few- to several-flowered, glandular-pubescent cyme. Flowers perfect, perigynous; hypanthium saucer-shaped; sepals ovate, purple, 7–15 mm long, alternate with narrower and shorter bracteoles; petals dark red, 3–7 mm long; stamens usually 20 or more; styles numerous. Fruit a cluster of ovoid achenes, each ca. 1.5 mm long enveloped by the calyx; styles deciduous at maturity, attached laterally (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Distinguished from the genus Potentilla in Montana by the reddish flowers and wetland habitat.

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 88

(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
Fens and wetland in the montane and subalpine

References
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Citation for data on this website:
Marsh Cinquefoil — Comarum palustre.  Montana Field Guide.  .  Retrieved on , from