Pinus longaeva |
Pinus coulteri |
|
---|---|---|
bristlecone pine, Great Basin bristlecone pine, intermountain bristlecone pine |
big-cone pine, Coulter pine |
|
Habit | Trees to 16m; trunk to 2m diam., strongly tapering; crown rounded, flattened (sheared), or irregular. | Trees to 24m; trunk to 1m diam., straight to contorted; crown broad, thin, irregular. |
Bark | red-brown, shallowly to deeply fissured with thick, scaly, irregular, blocky ridges. |
dark gray-brown to near black, deeply furrowed, with long, scaly, irregularly anastomosing, rounded ridges. |
Branches | contorted, pendent; twigs pale red-brown, aging gray to yellow-gray, puberulent, young branches resembling long bottlebrushes because of persistent leaves. |
often ascending; twigs stout to moderately slender, violet-brown, often glaucous, aging gray-brown, rough. |
Buds | ovoid-acuminate, pale red-brown, ca. 1cm, resinous. |
ovoid, deep red-brown, 1.5(–3)cm, resinous; scale margins white-fringed, apex cuspidate. |
Leaves | mostly 5 per fascicle, upcurved, persisting 10–30 years, 1.5–3.5cm × 0.8–1.2mm, mostly connivent, deep yellow-green, with few resin splotches but often scurfy with pale scales, abaxial surface without median groove but with 2 subepidermal but evident resin bands, adaxial surfaces conspicuously whitened with stomates, margins entire or remotely and finely serrulate distally, apex bluntly acute to short-acuminate; sheath ca. 1cm, soon forming rosette, 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 | cylindro-ellipsoid, 7–10mm, purple-red. |
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-cylindric with rounded base before opening, lance-cylindric to narrowly ovoid when open, 6–9.5cm, purple, aging red-brown, nearly sessile; apophyses much thickened, sharply keeled; umbo central, raised on low buttress, truncate to umbilicate, abruptly narrowed to slender but stiff, variable prickle 1–6mm, resin exudate pale. |
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. |
|
Pinus longaeva |
Pinus coulteri |
|
Habitat | Subalpine and alpine | Dry rocky slopes, flats, ridges, and chaparral, transitional to oak-pine woodland |
Elevation | 1700–3400m (5600–11200ft) | 300–2100m (1000–6900ft) |
Distribution |
CA; NV; UT
|
CA; Mexico in Baja California
|
Discussion | Pinus longaeva is considered by dendrochronologists to be the longest-lived tree. One tree was estimated to be 5000 years old. (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 | P. aristata var. longaeva | |
Name authority | D. K. Bailey: Ann. Missouri Bot. Gard. 57: 243. (1970) | D. Don: Trans. Linn. Soc. London, Bot. 17: 440. (1836) |
Web links |