Flora of North America species comparison

light red-brown, furrowed and cross-checked into irregularly rectangular, scaly plates.

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

spreading-ascending;

twigs moderately slender (to 1cm thick), orange- to red-brown, aging darker brown, rough.

ascending;

twigs slender, red-brown.

ovoid-acuminate, red-brown, to ca. 2cm, resinous;

scale margins fringed.

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

scale margins fringed, apex attenuate.

2 per fascicle, straight or slightly twisted, brittle, breaking cleanly when bent, deep yellow-green, all surfaces with narrow stomatal bands, margins serrulate, apex short-conic, acute;

sheath 1–2.5cm, base persistent.

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.

ellipsoid, ca. 15mm, dark purple.

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

cones maturing and opening in 2 years, spreading, symmetric, ovoid before opening, broadly ovoid to nearly globose when open, 3.5–6cm, light red-brown, nearly sessile;

apophyses slightly thickened, slightly raised, transversely low-keeled;

umbo central, centrally depressed, unarmed.

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.

=24.

=24.