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.

cinnamon- to gray-brown, deeply furrowed, plates long, scaly.

ascending;

twigs slender, red-brown.

spreading, distal branches ascending;

twigs gray-green to red-tan, aging gray, mostly puberulent.

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

scale margins fringed, apex attenuate.

cylindro-ovoid, red-brown, to 0.8cm, resinous.

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 ascending, persisting 2–4 years, 5–10cm × (0.9–)1–1.5(–2)mm, straight, slightly twisted, pliant, blue-green, abaxial surface with only a few lines evident, adaxial surfaces with evident white stomatal lines, margins finely serrulate, apex acuminate;

sheath (1–)1.5–2cm, shed early.

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

ellipsoid-cylindric, to 15mm, 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, often clustered, pendent, symmetric, cylindric before opening, lance-cylindric to ellipsoid-cylindric when open, 25–50cm, yellow-brown, stalks 6–15cm;

apophyses somewhat thickened;

umbo terminal, depressed, resinous, slightly excurved.

=24.

=24.