Flora of North America species comparison

pale gray, from distance appearing whitish to light gray and smooth, in age separating into thin plates.

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

spreading to ascending, often persistent to trunk base;

twigs stout, pale red-brown, with light brown, often glandular puberulence, somewhat roughened by elevated scars, aging gray to pale gray-brown.

spreading-ascending;

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

ovoid, light red-brown, 0.8–1cm;

scale margins entire.

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

scale margins fringed.

5 per fascicle, mostly ascending and upcurved, persisting 5–8 years, 3–7cm × 1–1.5(–2)mm, mostly connivent, deep yellow-green, abaxial surface less so, adaxial surface conspicuously whitened by stomates, margins rounded, minutely serrulate distally, apex conic-acute;

sheath 0.8–1.2cm, shed early.

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.

cylindro-ovoid, ca. 10–15mm, scarlet.

ellipsoid, ca. 15mm, dark purple.

cones remaining on tree (unless dislodged by animals), not opening naturally but through animal agency, spreading, symmetric, broadly ovoid to depressed-ovoid or nearly globose, 4–8cm, dull gray- to black-purple, sessile to short-stalked;

scales thin-based and easily broken off;

apophyses much thickened, strongly cross-keeled, tip upcurved, brown;

umbo terminal, short, incurved, broadly triangular, tip acute.

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.

=24.

=24.