Flora of North America species comparison

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Pinus monticola

pin argenté, western white pine
Habit Trees to 70m; trunk to 2.5m diam., straight; crown narrowly conic, becoming broad and flattened.
Bark

gray, distinctly platy, plates scaly.
Branches

nearly whorled, spreading-ascending;

twigs slender, pale red-brown, rusty puberulent and slightly glandular (rarely glabrous), aging purple-brown or gray, smooth.
Buds

ellipsoid or cylindric, rust-colored, 0.4–0.5cm, slightly resinous.
Leaves

5 per fascicle, spreading to ascending, persisting 3–4 years, 4–10cm × 0.7–1mm, straight, slightly twisted, pliant, blue-green, abaxial surface without evident stomatal lines, adaxial surfaces with evident stomatal lines, margins finely serrulate, apex broadly to narrowly acute;

sheath 1–1.5cm, shed early.
Pollen cones

ellipsoid, 10–15mm, yellow.
Seed(s)

cones maturing in 2 years, shedding seeds and falling soon thereafter, clustered, pendent, symmetric, lance-cylindric to ellipsoid-cylindric before opening, broadly lanceoloid to ellipsoid-cylindric when open, 10–25cm, creamy brown to yellowish, without purple or gray tints, resinous, stalks to 2cm;

umbo terminal, depressed.
2n

=24.

Pinus monticola
Habitat Montane moist forests, lowland fog forests
Elevation 0–3000m (0–9800ft)
Distribution
from FNA
CA; ID; MT; NV; OR; WA; AB; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

Pinus monticola is the most important western source for matchwood. Its wood lacks the sugary exudates seen in P. lambertiana.

Western white pine (Pinus monticola) is the state tree of Idaho.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Pinaceae > Pinus
Sibling taxa
P. albicaulis, P. aristata, P. attenuata, P. balfouriana, P. banksiana, P. cembroides, P. clausa, P. contorta, P. coulteri, P. echinata, P. edulis, P. elliottii, P. engelmannii, P. flexilis, P. glabra, P. jeffreyi, P. lambertiana, P. leiophylla, P. longaeva, P. monophylla, P. muricata, P. palustris, P. ponderosa, P. pungens, P. quadrifolia, P. radiata, P. resinosa, P. rigida, P. sabiniana, P. serotina, P. strobiformis, P. strobus, P. sylvestris, P. taeda, P. torreyana, P. virginiana, P. washoensis
Synonyms Strobus monticola
Name authority Douglas ex D. Don: in Lambert, Descr. Pinus [ed. 3] 2: unnumbered page between 144 and 145. (1832)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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