Flora of North America species comparison

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

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

spreading-ascending;

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

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

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

scale margins conspicuously fringed.

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

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.

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.

lance-cylindric, 20–35mm, yellow to yellow- or purple-brown or yellow.

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

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.

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).