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western white pine

singleleaf pine

Habit Trees to 70 m tall; mature crown conic.
Buds

ellipsoid to cylindric; reddish brown, resinous.

Leaves

in clusters of 5; straight, slightly twisted, 4–10 cm × 0.7–1 mm, blue-green;

margins finely serrulate;

abaxial surface without stomatal lines;

adaxial surface with stomatal lines;

apex acute;

sheaths deciduous.

Pollen cones

ellipsoid, 10–15 mm long, yellow.

Seeds

obovoid, 5–7 mm long; reddish brown;

wings about 4 times as long as body.

Trunks

to 2.5 m in diameter; straight;

bark gray, forming scaly plates;

branches spreading and ascending;

twigs reddish brown; smooth.

Seed cones

lanceoloid to cylindric, symmetric, 10–25 cm long, brown to yellowish, pendent;

stalks less than 2 cm long, maturing in 2 years, opening at maturity;

umbos terminal, depressed.

2n

=24.

Pinus monticola

Pinus monophylla

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Montane forests, wetlands. 400–2500 m. BR, BW, Casc, CR, ECas, Sisk. CA, ID, NV, WA; north to British Columbia, northeast to MT. Native.

Pinus monticola is the state tree of Idaho.

[This taxon does not have a floristic treatment in Flora of Oregon.]

Source Flora of Oregon, volume 1, page 123
Stephen Meyers
Flora of Oregon, volume 1
Sibling taxa
P. albicaulis, P. attenuata, P. attenuata x Pinus radiata, P. balfouriana, P. contorta, P. flexilis, P. jeffreyi, P. lambertiana, P. monophylla, P. muricata, P. pinaster, P. ponderosa, P. sabiniana, P. sylvestris
P. albicaulis, P. attenuata, P. attenuata x Pinus radiata, P. balfouriana, P. contorta, P. flexilis, P. jeffreyi, P. lambertiana, P. monticola, P. muricata, P. pinaster, P. ponderosa, P. sabiniana, P. sylvestris
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