Pinus edulis |
Pinus coulteri |
|
---|---|---|
Colorado pinyon, pinyon, piñon pine, piñón, two needle pinyon pine, two-needle pinyon |
big-cone pine, Coulter pine |
|
Habit | Shrubs or trees to 21m; trunk to 0.6m diam., strongly tapering, erect; crown conic, rounded, dense. | Trees to 24m; trunk to 1m diam., straight to contorted; crown broad, thin, irregular. |
Bark | red-brown, shallowly and irregularly furrowed, ridges scaly, rounded. |
dark gray-brown to near black, deeply furrowed, with long, scaly, irregularly anastomosing, rounded ridges. |
Branches | persistent to near trunk base; twigs pale red-brown to tan, rarely glaucous, aging gray-brown to gray, glabrous to papillose-puberulent. |
often ascending; twigs stout to moderately slender, violet-brown, often glaucous, aging gray-brown, rough. |
Buds | ovoid to ellipsoid, red-brown, 0.5–1cm, resinous. |
ovoid, deep red-brown, 1.5(–3)cm, resinous; scale margins white-fringed, apex cuspidate. |
Leaves | (1–)2(–3) per fascicle, upcurved, persisting 4–6 years, 2–4cm × (0.9–)1–1.5mm, connivent, 2-sided (1-leaved fascicles with leaves 2-grooved, 3-leaved fascicles with leaves 3-sided), blue-green, all surfaces marked with pale stomatal bands, particularly the adaxial, margins entire or finely serrulate, apex narrowly acute to subulate; sheath 0.5–0.7cm, scales soon recurved, 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 | ellipsoid, ca. 7mm, yellowish to red-brown. |
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, ovoid before opening, depressed-ovoid to nearly globose when open, ca. (3.5–)4(–5)cm, pale yellow- to pale red-brown, resinous, nearly sessile to short-stalked; apophyses thickened, raised, angulate; umbo subcentral, slightly raised or depressed, truncate or umbilicate. |
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 edulis |
Pinus coulteri |
|
Habitat | Dry mountain slopes, mesas, plateaus, and pinyon-juniper woodland | Dry rocky slopes, flats, ridges, and chaparral, transitional to oak-pine woodland |
Elevation | 1500–2100(–2700)m (4900–6900(–8900)ft) | 300–2100m (1000–6900ft) |
Distribution |
AZ; CA; CO; NM; OK; TX; UT; WY; Mexico in Chihuahua
|
CA; Mexico in Baja California
|
Discussion | Pinus edulis var. fallax Little (P. californiarum subsp. fallax (Little) D.K.Bailey) appears to combine features of P. edulis and P. monophylla. More study is needed. Seeds of Pinus edulis, the commonest southwestern United States pinyon, are much eaten and traded by Native Americans. Pinyon (Pinus edulis) is the state tree of New Mexico. (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 | Caryopitys edulis, P. cembroides var. edulis | |
Name authority | Engelmann: in Wislizenus, Mem. Tour N. Mexico 88. (1848) | D. Don: Trans. Linn. Soc. London, Bot. 17: 440. (1836) |
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