Flora of North America species comparison

purple-brown to dark brown, shallowly and narrowly fissured, with irregular, flat, loose-scaly plates, on upper sections of trunk nearly smooth.

brown to gray- or red-brown, platy to furrowed.

ascending;

twigs slender, red-brown.

slender, orange to red-brown, aging darker brown, rough.

ovoid to ovoid-cylindric, dark red-brown, aging darker, ca. 1.5cm, resinous;

scale margins fringed, apex attenuate.

narrowly to broadly ovoid, dark red-brown, to 1.2cm, slightly resinous.

3 per fascicle, spreading or ascending, persisting 4–5 years, (8–)9–15(–20)cm × (1–)1.3–1.8mm, straight or slightly curved, twisted, yellow-green, all surfaces with fine stomatal lines, margins serrulate, apex abruptly conic-subulate;

sheath (1–)1.5–2cm, base persistent.

2 per fascicle, spreading or ascending, persisting 3–8 years, 2–8cm × 0.7–2(–3)mm, twisted, yellow-green to dark green, all surfaces with fine stomatal lines, margins finely serrulate, apex blunt to acute or narrowly acuminate;

sheath 0.3–0.6(–1)cm, persistent.

ellipsoid-cylindric, 10–15mm, orange-brown.

ellipsoid to cylindric, 5–15mm, orange-red.

cones maturing in 2 years, serotinous, long-persistent, remaining closed for 20 years or more, or opening on burning, in whorls, hard and heavy, very asymmetric, lanceoloid before opening, ovoid-cylindric when open, 8–15cm, yellow- or pale red-brown, stalks to 1cm;

apophyses toward outside base increasingly elongate, mammillate or raised-angled-conic, downcurved near base, scarcely raised on branchlet side, rhombic;

umbo central, low-pyramidal, sharp, upcurved.

cones maturing in 2 years or variably serotinous, variably persistent, spreading to reflexed, often curved, nearly symmetric or variably asymmetric, lanceoloid to ovoid before opening, broadly ovoid to nearly globose when open, 2–6cm, tan to pale red-brown, lustrous, nearly sessile or on stalks to 1cm;

apophyses nearly rhombic, variously elongate, cross-keeled, often mammillate toward outer cone base and on inside above middle;

umbo central, depressed-triangular, prickle barely elongate to stubby or slender and to 6mm.

branches often descending, the upper spreading or ascending.

=24.

=24 (variety not indicated).