Pinus rigida |
Pinus quadrifolia |
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pin rigide, pitch pine |
four-needle pinyon, nut pine, Parry pine, Parry pinyon, Parry pinyon pine, piñón, piñón de California |
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Habit | Trees to 31m; trunk to 0.9m diam., straight or crooked, commonly with adventitious sprouts; crown rounded or irregular. | Trees to 10m; trunk to 0.5m diam., straight, much branched; crown dense, becoming rounded. |
Bark | red-brown, deeply and irregularly furrowed, with long, irregularly rectangular, flat, scaly ridges, resin pockets absent. |
red-brown, irregularly furrowed and cross-checked to irregularly rectangular, plates scaly. |
Branches | arching-spreading to ascending, poorly self-pruning; 2-year-old branchlets stout (mostly over 5mm thick), orange-brown, aging darker brown, rough. |
spreading to ascending, persistent to trunk base; twigs slender, pale orange-brown, puberulent-glandular, aging brown to gray-brown. |
Buds | ovoid to ovoid-cylindric, red-brown, ca. 1–1.5cm, resinous; scale margins fringed, apex cuspidate. |
ovoid, light red-brown, ca. 0.4–0.5cm, slightly resinous. |
Leaves | 3(–5) per fascicle, spreading to ascending, persisting 2–3 years, 5–10(–15)cm × 1–1.5(–2)mm, straight, twisted, deep to pale yellow-green, all surfaces with fine stomatal lines, margins serrulate, apex abruptly subulate-acuminate; sheath 0.9–1.2cm, base persistent. |
(3–)4(–5) per fascicle, persisting 3–4 years, (2–)3–6cm × (1–)1.2–1.7mm, curved, connivent, stiff, green to blue-green, margins entire to minutely scaly-denticulate, finely serrulate, apex subulate, adaxial surfaces mostly strongly whitened with stomatal bands, abaxial surface not so but 2 subepidermal resin bands evident; sheath 0.5–0.6cm, scales soon recurved, forming rosette, shed early. |
Pollen cones | cylindric, ca. 20mm, yellow. |
ovoid, ca. 10mm, yellowish. |
Seed(s) | cones maturing in 2 years, shedding seeds soon thereafter or variously serotinous and long-persistent, often clustered, symmetric, conic to ovoid before opening, broadly ovoid with flat or slightly convex base when open, 3–9cm, creamy brown to light red-brown, sessile to short-stalked, base truncate, scales firm, with dark red-brown border on adaxial surface distally; apophyses slightly raised, rhombic, with strong transverse keels; umbo central, low-triangular, with slender, downcurved prickle. |
cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, ovoid before opening, broadly ovoid to depressed-globose when open, (3–)4–8(–10)cm, pale yellow-brown, sessile to short-stalked, apophyses thickened, strongly raised, diamond-shaped, transversely keeled, umbo subcentral, low-pyramidal or sunken, blunt. |
2n | =24. |
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Pinus rigida |
Pinus quadrifolia |
|
Habitat | Upland or lowland, sterile, dry to boggy soils | Dry rocky sites |
Elevation | 0–1400m (0–4600ft) | 1200–1800m (3900–5900ft) |
Distribution |
CT; DE; GA; KY; MA; MD; ME; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WV; ON; QC
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CA; Mexico in Baja California
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Discussion | Pinus rigida often has poor form and is not valued highly as saw timber. It is fire successional, sprouts adventitiously, and is frequently shrubby in the northern part of its range. It is known to hybridize naturally with P. echinata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Pinus quadrifolia is the rarest pinyon in the flora. It hybridizes naturally with P. monophylla. (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. cembroides var. parryana, P. juarezensis, P. parryana | |
Name authority | Miller: Gard. Dict., ed. 8 Pinus no. 10. (1768) | Parlatore ex Sudworth: U.S.D.A. Div. Forest. Bull. 14: 17. (1897) |
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