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Montana Field Guides

Western White Pine - Pinus monticola

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Status Under Review

Global Rank: G4G5
State Rank: S3?
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:

External Links






State Rank Reason (see State Rank above)
Western white pine populations have been severely impacted by the introduced pathogen, white pine blister rust. The numbers and extent of the species in mesic, western Monatana forests have been substantially reduced since the introduction of the blister rust in the early 1900's. Mortality from blister rust continues to have an impact on the species in Montana. Further review is needed to assess the impact of the blister rust on the long-term viability of the species in the state.
  • Details on Status Ranking and Review
    Western White Pine (Pinus monticola) Conservation Status Review
    Review Date =
 
General Description
Large tree to 60 m tall with a conical to rounded crown. Bark thin, smooth at first, becoming scaly with age. Leaves light blue-green, 4–10 cm long, 5 per fascicle, the tips denticulate. Seed cones narrowly elliptic, 15–25 cm long; scales thin, tongue-shaped. Seeds with conspicuous wings (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

General Distribution
Mapped Observations

 


Distribution Comments
In MT from Lincoln and Flathead counties to Ravalli and Lewis and Clark counties; BC to CA, NV, and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 30

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

Recency

 

(Records associated with a range of dates are excluded from time charts)



Habitat
Mesic montane forests of western Montana.

References
  • Additional ReferencesLegend:   View WorldCat Record   View Online Publication
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    • Lesica, P. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.
    • Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
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Citation for data on this website:
Western White Pine — Pinus monticola.  Montana Field Guide.  Montana Natural Heritage Program.  Retrieved on July 30, 2014, from http://FieldGuide.mt.gov/detail_PGPIN040M0.aspx
 
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