Flora of North America species comparison

purple-brown to dark brown, shallowly and narrowly fissured, with irregular, flat, loose-scaly plates, on upper sections of trunk nearly smooth.

gray, nearly smooth, cross-checked in age into scaly plates and ridges.

ascending;

twigs slender, red-brown.

spreading to ascending, often persistent to trunk base;

twigs pale red-brown, puberulous (rarely glabrous), slightly resinous, aging gray, smooth.

ovoid to ovoid-cylindric, dark red-brown, aging darker, ca. 1.5cm, resinous;

scale margins fringed, apex attenuate.

ovoid, light red-brown, 0.9–1cm, resinous;

lower scales ciliolate along margins.

3 per fascicle, spreading or ascending, persisting 4–5 years, (8–)9–15(–20)cm × (1–)1.3–1.8mm, straight or slightly curved, twisted, yellow-green, all surfaces with fine stomatal lines, margins serrulate, apex abruptly conic-subulate;

sheath (1–)1.5–2cm, base persistent.

5 per fascicle, spreading to upcurved and ascending, persisting 5–6 years, 3–7cm × 1–1.5mm, pliant, dark green, abaxial surface with less conspicuous stomatal bands than adaxial surfaces, adaxial surfaces with strong, pale stomatal bands, margins finely serrulate, apex conic-acute to acuminate;

sheath 1–1.5(–2)cm, shed early.

ellipsoid-cylindric, 10–15mm, orange-brown.

broadly ellipsoid-cylindric, ca. 15mm, pale red or yellow.

cones maturing in 2 years, serotinous, long-persistent, remaining closed for 20 years or more, or opening on burning, in whorls, hard and heavy, very asymmetric, lanceoloid before opening, ovoid-cylindric when open, 8–15cm, yellow- or pale red-brown, stalks to 1cm;

apophyses toward outside base increasingly elongate, mammillate or raised-angled-conic, downcurved near base, scarcely raised on branchlet side, rhombic;

umbo central, low-pyramidal, sharp, upcurved.

cones maturing in 2 years, shedding seeds and falling soon thereafter, spreading, symmetric, lance-ovoid before opening, cylindro-ovoid when open, 7–15cm, straw-colored, resinous, sessile to short-stalked, apophyses much thickened, strongly cross-keeled, umbo terminal, depressed.

=24.

=24.