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singleleaf pine

foothill pine, gray pine

Habit Trees to 24 m tall; mature crown sparse, open and round.
Buds

ovoid; reddish brown, resinous.

Leaves

in clusters of 3; dull; straight, slightly twisted, 15–30 cm × 1–2 mm; bluish green;

margins serrulate; all surfaces with stomatal lines;

apex acute;

sheaths persistent.

Pollen cones

ellipsoid, 10–15 mm long, yellow.

Seeds

oblong, 1.5–2 cm long, dark brown to black;

wings about 50% the length of the body.

Trunks

to 1.2 m in diameter; straight to contorted or forked;

bark dark brown to black, irregularly furrowed with rounded ridges; inner bark orangish;

branches usually ascending;

twigs brown to black, glaucous, slightly roughened by bud scars.

Seed cones

oblong-ovoid, nearly symmetric, 15–20 cm long; light reddish brown, pendent;

stalks 1–5 cm long, maturing in 2 years, opening at maturity;

umbos continuous with apophyses to form long upcurving claws.

2n

=24.

Pinus monophylla

Pinus sabiniana

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

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

Dry mixed forests. 200–1400 m. Sisk. CA. Native.

Source Flora of Oregon, volume 1 Flora of Oregon, volume 1, page 124
Stephen Meyers
Sibling taxa
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
P. albicaulis, P. attenuata, P. attenuata x Pinus radiata, P. balfouriana, P. contorta, P. flexilis, P. jeffreyi, P. lambertiana, P. monophylla, P. monticola, P. muricata, P. pinaster, P. ponderosa, P. sylvestris
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