Pinus flexilis |
Pinus coulteri |
|
---|---|---|
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 |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WY; AB; BC
|
CA; Mexico in Baja California
|
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 | ||
Synonyms | Apinus flexilis | |
Name authority | E. James: Account Exped. Pittsburgh 2: 27, 35. (1823) | D. Don: Trans. Linn. Soc. London, Bot. 17: 440. (1836) |
Web links |