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limber pine, pin blanc de l'ouest

big-cone pine, Coulter pine

Habit Trees to 26m; trunk to 2m diam., straight to contorted; crown conic, becoming rounded. Trees to 24m; trunk to 1m diam., straight to contorted; crown broad, thin, irregular.
Bark

gray, nearly smooth, cross-checked in age into scaly plates and ridges.

dark gray-brown to near black, deeply furrowed, with long, scaly, irregularly anastomosing, rounded ridges.

Branches

spreading to ascending, often persistent to trunk base;

twigs pale red-brown, puberulous (rarely glabrous), slightly resinous, aging gray, smooth.

often ascending;

twigs stout to moderately slender, violet-brown, often glaucous, aging gray-brown, rough.

Buds

ovoid, light red-brown, 0.9–1cm, resinous;

lower scales ciliolate along margins.

ovoid, deep red-brown, 1.5(–3)cm, resinous;

scale margins white-fringed, apex cuspidate.

Leaves

5 per fascicle, spreading to upcurved and ascending, persisting 5–6 years, 3–7cm × 1–1.5mm, pliant, dark green, abaxial surface with less conspicuous stomatal bands than adaxial surfaces, adaxial surfaces with strong, pale stomatal bands, margins finely serrulate, apex conic-acute to acuminate;

sheath 1–1.5(–2)cm, shed early.

3 per fascicle, slightly spreading, not drooping, mostly ascending in a brush, persisting 3–4 years, 15–30cm × ca. 2mm, slightly curved or straight, twisted, dusty gray-green, all surfaces with pale, fine stomatal lines, margins serrulate, apex abruptly subulate;

sheath 2–4cm, base persistent.

Pollen cones

broadly ellipsoid-cylindric, ca. 15mm, pale red or yellow.

ovoid to cylindric, to 25mm, light purple-brown, aging orange-brown.

Seed(s)

cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, lance-ovoid before opening, cylindro-ovoid when open, 7–15cm, straw-colored, resinous, sessile to short-stalked, apophyses much thickened, strongly cross-keeled, umbo terminal, depressed.

cones maturing in 2 years, gradually shedding seeds thereafter and moderately persistent, massive, heavy, drooping, asymmetric at base, narrowly ovoid before opening, ovoid-cylindric when open, 20–35cm, pale yellow-brown, resinous, stalks to 3cm;

apophyses transverse-rhombic, strongly and sharply cross-keeled, elongate, curved, continuous with umbos to form long, upcurved claws 2.5–3cm.

2n

=24.

=24.

Pinus flexilis

Pinus coulteri

Habitat High montane forests, often at timberline Dry rocky slopes, flats, ridges, and chaparral, transitional to oak-pine woodland
Elevation (1000–)1500–3600m ((3300–)4900–11800ft) 300–2100m (1000–6900ft)
Distribution
from FNA
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico in Baja California
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[BONAP county map]
Discussion

Pinus flexilis, much branched with a strongly tapering trunk, is little utilized because of its form and relative inaccessibility. It reportedly forms intermediates with P. strobiformis where the two overlap. The fresh-cut wood has the odor of turpentine.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Pinus coulteri is the heaviest-coned pine; one who seeks its shade should wear a hardhat.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 2. FNA vol. 2.
Parent taxa Pinaceae > Pinus 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. glabra, P. jeffreyi, P. lambertiana, P. leiophylla, P. longaeva, P. monophylla, P. monticola, 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
P. albicaulis, P. aristata, P. attenuata, P. balfouriana, P. banksiana, P. cembroides, P. clausa, P. contorta, P. echinata, P. edulis, P. elliottii, P. engelmannii, P. flexilis, P. glabra, P. jeffreyi, P. lambertiana, P. leiophylla, P. longaeva, P. monophylla, P. monticola, 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 Apinus flexilis
Name authority E. James: Account Exped. Pittsburgh 2: 27, 35. (1823) D. Don: Trans. Linn. Soc. London, Bot. 17: 440. (1836)
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