Flora of North America species comparison

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

yellow-brown to cinnamon, deeply furrowed and cross-checked, forming large irregular scaly plates.

spreading and ascending, persistent to near trunk base;

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

spreading-ascending;

twigs stout (to 2cm thick), purple-brown, often glaucous, aging rough.

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

scale margins fringed.

ovoid, tan to pale red-brown, 2–3cm, not resinous;

scale margins conspicuously 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.

3 per fascicle, spreading-ascending, persisting (2–)4–6(–7) years, 12–22(–25)cm × ca. 1.5–2mm, slightly twisted, gray- to yellow-green, all surfaces with fine stomatal lines, margins finely serrulate, apex acute to acuminate;

sheath (1–)1.5–2.5(–3)cm, base persistent.

ellipsoid, ca. 10mm, yellow.

lance-cylindric, 20–35mm, yellow to yellow- or purple-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 and falling soon thereafter, nearly terminal, spreading, slightly asymmetric at base, ovoid-conic before opening, cylindro-ovoid when open, (10–)15–30cm, light red-brown, nearly sessile or on stalks to 0.5cm, abaxial surface of scales not darker than or sharply contrasting in color with adaxial surface, scales in low spirals (as compared to Pinus ponderosa) of 8 or more per row as viewed from side, those of cones just prior to and after cone fall not so spreading and deflexed, thus not so much separated from adjacent scales;

apophyses slightly thickened and raised, not keeled;

umbo central, slightly raised, with short, slender, reflexed prickle.

=24.

=24.