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Montana Field Guide

Montana Field Guides

Western Goldthread - Coptis occidentalis


Global Rank: G4G5
State Rank: S3S4

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

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General Description
Rhizomatous, herbaceous perennials with leafless stems 10–25 cm high in fruit. Leaves glabrous, petiolate, trifoliolate; leaflets dentate, often 3 to lobed, 2–7 cm long. Inflorescence a few-flowered, bractless cyme. Flowers perfect or staminate, star-shaped; sepals 5 to 7, white, deciduous, 9–12 mm; petals 5–7, white, clawed with a nectary near the base of the blade, shorter than sepals; stamens 10 to many, pistils 4 to 15, several-seeded. Fruit an aggregate of oblong follicles with gently recurved beaks (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Endemic to North ID, adjacent WA, and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 33

(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 forests, shrub fields, often with spruce or red cedar; montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Western Goldthread — Coptis occidentalis.  Montana Field Guide.  .  Retrieved on , from