Western White Pine - Pinus monticola
Status Under Review
* (see State Rank Reason below)
MNPS Threat Rank
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 =
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)
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:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Mesic montane forests of western Montana.
- Additional ReferencesLegend: 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.