Pinus monophylla |
Pinus coulteri |
|
---|---|---|
piñón, single leaf pinyon, single-leaf pine, singleleaf pinyon pine |
big-cone pine, Coulter pine |
|
Habit | Trees to 14m; trunk to 0.5m diam., strongly tapering, much branched; crown usually rounded, dense. | Trees to 24m; trunk to 1m diam., straight to contorted; crown broad, thin, irregular. |
Bark | red-brown, irregularly furrowed or cross-checked, scaly. |
dark gray-brown to near black, deeply furrowed, with long, scaly, irregularly anastomosing, rounded ridges. |
Branches | spreading and ascending, persistent to near trunk base; twigs stout, orange-brown, aging brown to gray, sometimes sparsely puberulent. |
often ascending; twigs stout to moderately slender, violet-brown, often glaucous, aging gray-brown, rough. |
Buds | ellipsoid, light red-brown, 0.5–0.7cm, resinous; scale margins fringed. |
ovoid, deep red-brown, 1.5(–3)cm, resinous; scale margins white-fringed, apex cuspidate. |
Leaves | 1(–2) per fascicle, ascending, persisting 4–6(–10) years, 2–6cm × 1.3–2(–2.5)mm, curved, terete (though often 2-grooved), gray-green, all surfaces with stomatal lines, margins entire, apex subulate; sheath 0.5–1cm, 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. 10mm, 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, ovoid before opening, broadly depressed-ovoid to nearly globose when open, 4–6(–8)cm, pale yellow-brown, nearly sessile; apophyses thickened, slightly raised; umbo subcentral, raised or depressed, nearly truncate, apiculate. |
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 monophylla |
Pinus coulteri |
|
Habitat | Dry low-montane or foothill pinyon-juniper woodland | Dry rocky slopes, flats, ridges, and chaparral, transitional to oak-pine woodland |
Elevation | 1000–2300m (3300–7500ft) | 300–2100m (1000–6900ft) |
Distribution |
AZ; CA; ID; NV; UT; Mexico in Baja California
|
CA; Mexico in Baja California
|
Discussion | Pinus monophylla hybridizes with P. edulis and P. quadrifolia. Singleleaf pinyon (Pinus monophylla) is the state tree of Nevada. (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 monophylla, P. californiarum, P. cembroides var. monophylla | |
Name authority | Torrey & Frémont: in Frémont, Rep. Exped. Rocky Mts. 2: 319, plate 4. (1845) | D. Don: Trans. Linn. Soc. London, Bot. 17: 440. (1836) |
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