Flora of North America species comparison

red-brown, scaly-plated, plates with evident resin pockets.

gray to gray-brown, furrowed, with narrow, flat, irregular ridges, resin pockets absent, on upper sections of the trunk reddish to red-brown, platy becoming smooth distally.

spreading-ascending; 2-year-old branchlets slender (ca. 5mm or less), greenish brown to red-brown, often glaucous, aging red-brown to gray, roughened and cracking below leafy portion.

spreading to ascending, poorly self-pruning;

twigs slender, violet- to red-brown, rarely glaucous, aging gray, smooth.

ovoid to cylindric, red-brown, 0.5–0.7(–1)cm, resinous.

cylindric, purple-brown, to 1cm;

scale margins white-fringed.

2(–3) per fascicle, spreading-ascending, persistent 3–5 years, (5–)7–11(–13)cm × ca. 1mm, straight, slightly twisted, gray- to yellow-green, all surfaces with fine stomatal lines, margins finely serrulate, apex abruptly acute;

sheath 0.5–1(–1.5)cm, base persistent.

2 per fascicle, spreading-ascending, persisting 2–3 years, (3–)6–9(–10)cm × ca. 1mm, straight, slightly twisted, dark green, all surfaces with fine, inconspicuous stomatal lines, margins finely serrulate, apex short-conic;

sheath 0.3–0.5(–0.7)cm, base persistent.

cylindric, 15–20mm, yellow- to pale purple-green.

ellipsoid, ca. 10mm, brownish yellow.

cones maturing in 2 years, semipersistent, solitary or clustered, spreading, symmetric, lanceoloid or narrowly ovoid before opening, ovoid-conic when open, 4–6(–7)cm, red-brown, aging gray, nearly sessile or on stalks to 1cm, scales lacking contrasting dark border on adaxial surfaces distally;

umbo central, with elongate to short, stout, sharp prickle.

cones maturing in 2 years, shedding seeds soon thereafter or often long-serotinous, long-persistent, solitary or whorled, spreading, symmetric (rarely slightly asymmetric, reflexed), lanceoloid before opening, ovoid to broadly ovoid when open, 3–8cm, red-brown, sessile or on stalks to 1cm, scales with dark red-brown, purple, or purple-gray border distally on adaxial surface;

apophyses thickened, shallowly and angulately raised, transversely rhombic, cross-keeled;

umbo central, low-pyramidal, tapering to sharp tip or weak, often deciduous prickle.

=24.

=24.