Trees; bark white, fissured into irregular, thin plates; 1st-year branchlets pale green-yellow, glabrous, with projected leaf scars. Needles 3 per bundle, triangular-flabellate in cross section, 6-10 cm, stiff, vascular bundle 1, resin canals 5-7, marginal, base with sheath shed. Seed cones shortly pedunculate, almost brown at maturity, oblong or ovoid, 12-20 × 9-11 cm. Seed scales 4-5 cm; apophyses broad, swollen, ± recurved, obviously ridged; umbo dorsal, apex obtuse. Seeds cylindric, ca. 2.5 cm; wing rudimentary, usually adhering to adjacent scale.