Pinus ponderosa |
Pinus pungens |
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bull pine, pin à bois lourd, pinabete, pino real, ponderosa pine, western yellow pine, yellow pine |
hickory pine, mountain pine, prickley pine, table mountain pine |
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Habit | Trees to 72m; trunk to 2.5m diam., straight; crown broadly conic to rounded. | Trees to 12m; trunk to 0.6m diam., straight to crooked, erect to leaning, poorly self-pruning; crown irregularly rounded or flattened. | ||||||||
Bark | yellow- to red-brown, deeply irregularly furrowed, cross-checked into broadly rectangular, scaly plates. |
red- to gray-brown, irregularly checked into scaly plates. |
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Branches | descending to spreading-ascending; twigs stout (to 2cm thick), orange-brown, aging darker orange-brown, rough. |
horizontally spreading; twigs slender, orange- to yellow-brown, aging darker brown, rough. |
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Buds | ovoid, to 2cm, fully 1cm broad, red-brown, very resinous; scale margins white-fringed. |
ovoid to cylindric, red-brown, 0.6–0.9cm, resinous. |
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Leaves | 2–5 per fascicle, spreading to erect, persisting (2–)4–6(–7) years, 7–25(–30)cm × (1–)1.2–2mm, slightly twisted, tufted at twig tips, pliant, deep yellow-green, all surfaces with evident stomatal lines, margins serrulate, apex abruptly to narrowly acute or acuminate; sheath 1.5–3cm, base persistent. |
2(–3) per fascicle, spreading or ascending, persisting 3 years, 3–6(–8)cm × 1–1.5mm, twisted, deep yellow-green, all surfaces with fine stomatal lines, margins harshly serrulate, apex acute to short-acuminate; sheath 0.5–1cm, base persistent. |
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Pollen cones | ellipsoid-cylindric, 1.5–3.5cm, yellow or red. |
ellipsoid, ca. 15mm, yellow. |
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Seed(s) | cones maturing in 2 years, shedding seeds soon thereafter, leaving rosettes of scales on branchlets, solitary or rarely in pairs, spreading to reflexed, symmetric to slightly asymmetric, conic-ovoid before opening, broadly ovoid when open, 5–15cm, mostly reddish brown, sessile to nearly sessile, scales in steep spirals (as compared to Pinus jeffreyi) of 5–7 per row as viewed from side, those of cones just prior to and after cone fall spreading and reflexed, thus well separate from adjacent scales; apophyses dull to lustrous, thickened and variously raised and transversely keeled; umbo central, usually pyramidal to truncated, rarely depressed, merely acute, or with a very short apiculus, or with a stout-based spur or prickle. |
cones maturing in 2 years, variably serotinous, mostly whorled, downcurved, asymmetric, ovoid before opening, broadly ovoid when open, (4–)6–10cm, gray- to pale red-brown, nearly sessile or on stalks to 1cm; apophyses thickened, diamond-shaped, strongly keeled, elongate, mammillate at cone base abaxially; umbo central, a stout, curved, sharp claw. |
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2n | =24. |
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Pinus ponderosa |
Pinus pungens |
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Habitat | Dry, mostly sandy or shaly uplands, Appalachians and associated Piedmont | |||||||||
Elevation | 500–1350m (1600–4400ft) | |||||||||
Distribution |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OK; OR; SD; TX; UT; WA; WY; BC; Mexico
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DE; GA; MD; NC; NJ; PA; SC; TN; VA; WV
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Discussion | Pinus ponderosa is the most economically important western yellow pine. Its wood is more similar in character to the white pines, and it is often referred to as white pine. The taxonomy of this complex is far from resolved. Ponderosa pine (Pinus ponderosa) is the state tree of Montana. Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Pinus pungens is a scrub pine and is too small and knotty to be much utilized except for pulpwood and firewood. Its common name refers to a general type of landform, not to a specific, named mountain. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 2. | FNA vol. 2. | ||||||||
Parent taxa | Pinaceae > Pinus | Pinaceae > Pinus | ||||||||
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Subordinate taxa | ||||||||||
Name authority | Douglas ex Lawson & C. Lawson: Agric. Man. 354. (1836) | Lambert: Ann. Bot. (London) 2: 198. (1805) | ||||||||
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