Pinus monticola |
Pinus engelmannii |
|
---|---|---|
pin argenté, western white pine |
Apache pine, Arizona longleaf pine, pino real |
|
Habit | Trees to 70m; trunk to 2.5m diam., straight; crown narrowly conic, becoming broad and flattened. | Trees to 35m; trunk to 0.6m diam., straight; crown irregularly rounded, rather thin. |
Bark | gray, distinctly platy, plates scaly. |
dark brown, at maturity deeply furrowed, ridges becoming yellowish, of narrow, elongate, scaly plates. |
Branches | nearly whorled, spreading-ascending; twigs slender, pale red-brown, rusty puberulent and slightly glandular (rarely glabrous), aging purple-brown or gray, smooth. |
straight to ascending; twigs stout (1–2cm thick), pale gray-brown, aging darker brown, rough. |
Buds | ellipsoid or cylindric, rust-colored, 0.4–0.5cm, slightly resinous. |
ovoid-conic, to 2cm, resinous; scale margins pale fringed. |
Leaves | 5 per fascicle, spreading to ascending, persisting 3–4 years, 4–10cm × 0.7–1mm, straight, slightly twisted, pliant, blue-green, abaxial surface without evident stomatal lines, adaxial surfaces with evident stomatal lines, margins finely serrulate, apex broadly to narrowly acute; sheath 1–1.5cm, shed early. |
3(–5) per fascicle, spreading-ascending, often drooping, forming a brush at twig tips, persisting 2 years, (20–)25–45cm × 2mm, dull green, all surfaces with fine stomatal lines, margins coarsely serrulate, apex conic-subulate; sheath 3–4cm, base persistent. |
Pollen cones | ellipsoid, 10–15mm, yellow. |
cylindric, ca. 25mm, yellow to yellow-brown. |
Seed(s) | cones maturing in 2 years, shedding seeds and falling soon thereafter, clustered, pendent, symmetric, lance-cylindric to ellipsoid-cylindric before opening, broadly lanceoloid to ellipsoid-cylindric when open, 10–25cm, creamy brown to yellowish, without purple or gray tints, resinous, stalks to 2cm; umbo terminal, depressed. |
cones maturing in 2 years and shedding seeds soon thereafter, not persistent, terminal, sometimes curved, often asymmetric, lance-ovoid before opening, ovoid when open, 11–14cm, light dull brown, nearly sessile or short-stalked; apophyses rhombic, somewhat to quite elongate, strongly raised toward outer cone base, sometimes curved, strongly cross-keeled, narrowed to thick, curved, broadly triangular-based umbo, this often producing outcurved claw. |
2n | =24. |
=24. |
Pinus monticola |
Pinus engelmannii |
|
Habitat | Montane moist forests, lowland fog forests | High and dry mountain ranges, valleys, and plateaus |
Elevation | 0–3000m (0–9800ft) | 1500–2500m (4900–8200ft) |
Distribution |
CA; ID; MT; NV; OR; WA; AB; BC
|
AZ; NM; Mexico
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Discussion | Pinus monticola is the most important western source for matchwood. Its wood lacks the sugary exudates seen in P. lambertiana. Western white pine (Pinus monticola) is the state tree of Idaho. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
In general appearance Pinus engelmannii much resembles P. palustris with its short-persistent, long leaves (but in this species drooping) and in its tendency to form a grass stage. It has a deep taproot as do P. palustris and P. ponderosa. (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 | Strobus monticola | P. macrophylla, P. apacheca, P. latifolia |
Name authority | Douglas ex D. Don: in Lambert, Descr. Pinus [ed. 3] 2: unnumbered page between 144 and 145. (1832) | Carrière |
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