Flora of North America species comparison

red-brown, irregularly furrowed or cross-checked, scaly.

gray-brown with irregular, scaly-plated ridges, on upper sections of trunk reddish, scaly.

spreading and ascending, persistent to near trunk base;

twigs stout, orange-brown, aging brown to gray, sometimes sparsely puberulent.

spreading-ascending to spreading-descending;

twigs slender, red- or purple-tinged, often glaucous, aging red-brown to gray, rough.

ellipsoid, light red-brown, 0.5–0.7cm, resinous;

scale margins fringed.

ovoid to cylindric, red-brown, 0.6–1cm, resinous or not resinous;

scale margins white-fringed.

1(–2) per fascicle, ascending, persisting 4–6(–10) years, 2–6cm × 1.3–2(–2.5)mm, curved, terete (though often 2-grooved), gray-green, all surfaces with stomatal lines, margins entire, apex subulate;

sheath 0.5–1cm, scales soon recurved, forming rosette, shed early.

2 per fascicle, spreading or ascending, persisting 3–4 years, 2–8cm × 1–1.5mm, strongly twisted, deep to pale yellow-green, all surfaces with inconspicuous stomatal lines, margins serrulate, apex narrowly acute;

sheath 0.4–1cm, base persistent.

ellipsoid, ca. 10mm, yellow.

ellipsoid-cylindric, 10–20mm, red-brown or yellow.

cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, ovoid before opening, broadly depressed-ovoid to nearly globose when open, 4–6(–8)cm, pale yellow-brown, nearly sessile;

apophyses thickened, slightly raised;

umbo subcentral, raised or depressed, nearly truncate, apiculate.

cones maturing in 2 years, shedding seeds soon thereafter, persisting to 5 years, symmetric, lance-ovoid or lanceoloid before opening, ovoid when open, 3–7(–8)cm, dull red-brown, nearly sessile or on stalks to 1cm, scales rigid, with strong purple-red or purple-brown border on adaxial surface distally;

apophyses slightly thickened, slightly elongate;

umbo central, low-pyramidal, with slender, stiff prickle.

=24.

=24.