Trees to 40 m tall; trunk to 3 m d.b.h. in native range; bark pale gray, rough, flaking into tiny scales; branchlets pale yellow or pale brownish yellow, stout, glabrous; winter buds reddish or pale black-brown, glossy, ovoid or ovoid-oblong, 8-10 mm, scales closely appressed. Leaves spirally arranged or ascending on upper side of branchlets, curved on lower side, dull green, quadrangular-linear, stout, rhombic in cross section, 1.5-2 cm × 1.5-2 mm, obviously keeled, stomatal lines along each surface, apex acute. Seed cones pale yellow-green before maturity, reddish brown when mature, narrowly ovoid or cylindric-ellipsoid, 7.5-12.5 × ca. 3.5 cm. Seed scales suborbicular or obovate, margin slightly denticulate, apex rounded. Seeds 6-8 mm; wing to 1.4 cm.
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