Flora of North America species comparison

dark brown, at maturity deeply furrowed, ridges becoming yellowish, of narrow, elongate, scaly plates.

yellow- to red-brown, deeply irregularly furrowed, cross-checked into broadly rectangular, scaly plates.

straight to ascending;

twigs stout (1–2cm thick), pale gray-brown, aging darker brown, rough.

descending to spreading-ascending;

twigs stout (to 2cm thick), orange-brown, aging darker orange-brown, rough.

ovoid-conic, to 2cm, resinous;

scale margins pale fringed.

ovoid, to 2cm, fully 1cm broad, red-brown, very resinous;

scale margins white-fringed.

3(–5) per fascicle, spreading-ascending, often drooping, forming a brush at twig tips, persisting 2 years, (20–)25–45cm × 2mm, dull green, all surfaces with fine stomatal lines, margins coarsely serrulate, apex conic-subulate;

sheath 3–4cm, base persistent.

2–5 per fascicle, spreading to erect, persisting (2–)4–6(–7) years, 7–25(–30)cm × (1–)1.2–2mm, slightly twisted, tufted at twig tips, pliant, deep yellow-green, all surfaces with evident stomatal lines, margins serrulate, apex abruptly to narrowly acute or acuminate;

sheath 1.5–3cm, base persistent.

cylindric, ca. 25mm, yellow to yellow-brown.

ellipsoid-cylindric, 1.5–3.5cm, yellow or red.

cones maturing in 2 years and shedding seeds soon thereafter, not persistent, terminal, sometimes curved, often asymmetric, lance-ovoid before opening, ovoid when open, 11–14cm, light dull brown, nearly sessile or short-stalked;

apophyses rhombic, somewhat to quite elongate, strongly raised toward outer cone base, sometimes curved, strongly cross-keeled, narrowed to thick, curved, broadly triangular-based umbo, this often producing outcurved claw.

cones maturing in 2 years, shedding seeds soon thereafter, leaving rosettes of scales on branchlets, solitary or rarely in pairs, spreading to reflexed, symmetric to slightly asymmetric, conic-ovoid before opening, broadly ovoid when open, 5–15cm, mostly reddish brown, sessile to nearly sessile, scales in steep spirals (as compared to Pinus jeffreyi) of 5–7 per row as viewed from side, those of cones just prior to and after cone fall spreading and reflexed, thus well separate from adjacent scales;

apophyses dull to lustrous, thickened and variously raised and transversely keeled;

umbo central, usually pyramidal to truncated, rarely depressed, merely acute, or with a very short apiculus, or with a stout-based spur or prickle.

=24.