Flora of North America species comparison

red-brown, shallowly and irregularly furrowed, ridges scaly, rounded.

red-brown, irregularly furrowed and cross-checked into rectangular, flat, scaly plates.

persistent to near trunk base;

twigs pale red-brown to tan, rarely glaucous, aging gray-brown to gray, glabrous to papillose-puberulent.

spreading to ascending;

twigs stout, orange- to yellow-orange, frequently glaucous, aging darker.

ovoid to ellipsoid, red-brown, 0.5–1cm, resinous.

ovoid to narrowly ovoid, red-brown, 1–1.5(–2)cm, resinous.

(1–)2(–3) per fascicle, upcurved, persisting 4–6 years, 2–4cm × (0.9–)1–1.5mm, connivent, 2-sided (1-leaved fascicles with leaves 2-grooved, 3-leaved fascicles with leaves 3-sided), blue-green, all surfaces marked with pale stomatal bands, particularly the adaxial, margins entire or finely serrulate, apex narrowly acute to subulate;

sheath 0.5–0.7cm, scales soon recurved, forming rosette, shed early.

3 per fascicle (to 5 in adventitious or disturbed growth), spreading to ascending, persisting 2–3 years, (12–)15–20(–21)cm × 1.3–1.5(–2)mm, slightly twisted, tufted at twig tips, straight, yellow-green, all surfaces with fine stomatal lines, margins serrulate, apex acuminate;

sheath 1–2cm, base persistent.

ellipsoid, ca. 7mm, yellowish to red-brown.

cylindric, to 30mm, yellow-brown.

cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, ovoid before opening, depressed-ovoid to nearly globose when open, ca. (3.5–)4(–5)cm, pale yellow- to pale red-brown, resinous, nearly sessile to short-stalked;

apophyses thickened, raised, angulate;

umbo subcentral, slightly raised or depressed, truncate or umbilicate.

cones maturing in 2 years, in some populations beginning to shed seeds then but more often variably serotinous, long-persistent, often whorled, symmetric, ovoid to lanceoloid before opening, broadly ovoid to nearly globose when open, 5–8cm, pale red-brown to creamy brown, sessile or on stalks to 1cm, scales with dark red-brown border on adaxial surface distally;

apophyses slightly thickened, low, rhombic, low cross-keeled;

umbo central, low-conic, with short, weak prickle, sometimes unarmed.

=24.

=24.