Pinus rigida
Pinus resinosa
pin rigide, pitch pine
Norway pine, pin rouge, red pine
red-brown, deeply and irregularly furrowed, with long, irregularly rectangular, flat, scaly ridges, resin pockets absent.
light red-brown, furrowed and cross-checked into irregularly rectangular, scaly plates.
arching-spreading to ascending, poorly self-pruning; 2-year-old branchlets stout (mostly over 5mm thick), orange-brown, aging darker brown, rough.
spreading-ascending;
twigs moderately slender (to 1cm thick), orange- to red-brown, aging darker brown, rough.
ovoid to ovoid-cylindric, red-brown, ca. 1–1.5cm, resinous;
scale margins fringed, apex cuspidate.
ovoid-acuminate, red-brown, to ca. 2cm, resinous;
scale margins fringed.
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.
2 per fascicle, straight or slightly twisted, brittle, breaking cleanly when bent, deep yellow-green, all surfaces with narrow stomatal bands, margins serrulate, apex short-conic, acute;
sheath 1–2.5cm, base persistent.
cylindric, ca. 20mm, yellow.
ellipsoid, ca. 15mm, dark purple.
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 and opening in 2 years, spreading, symmetric, ovoid before opening, broadly ovoid to nearly globose when open, 3.5–6cm, light red-brown, nearly sessile;
apophyses slightly thickened, slightly raised, transversely low-keeled;
umbo central, centrally depressed, unarmed.
=24.
=24.
Pinus rigida
Pinus resinosa
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 resinosa was once the most important timber pine in the Great Lakes region.
Norway pine (Pinus resinosa) is the state tree of Minnesota.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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