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Trees to 60 m tall; trunk to 6 m d.b.h. in native range; bark furrowed into small scales; branchlets usually pendulous, reddish brown or orange when young, glabrous or slightly pubescent; winter buds conical, scales reflexed, reddish brown. Leaves ascending or directed forward on upper side of branchlets, spreading on lower side, quadrangular-linear, straight or curved, 1.2-2.5 cm, stomatal lines along each surface. Seed cones brown when mature, cylindric, 10-15(-18.5) cm. Seed scales rhombic-obovate or-ovate, distal margin denticulate, apex truncate or emarginate. Seeds ca. 4 mm; wing ca. 1.6 cm.
Trees to 30m; trunk to diam.; crown conic. Bark gray-brown, scaly. Branches short and stout, the upper ascending, the lower drooping; twigs stout, reddish brown, usually glabrous. Buds reddish brown, 5--7mm, apex acute. Leaves 1--2.5cm, 4-angled in cross section, rigid, light to dark green, bearing stomates on all surfaces, apex blunt-tipped. Seed cones (10--)12--16cm; scales diamond-shaped, widest near middle, 18--30 ´ 15--20mm, thin and flexuous, margin at apex erose to toothed, apex extending 6--1 beyond seed-wing impression. 2 n =24.
Tree to 30 m tall; crown conical. Resting buds conical, 4-5 mm long, slightly resinous. Young shoots red-brown. Leaves dull, pale green, quadrangular or diamond-shaped in section, spread apart to show the lower surface of the shoot, 1-2 cm long. Male cones 8-15 mm long, yellow. Female cones green when young, maturing pale brown, cylindrical, often slightly curved, sessile, 10-15 cm long; scales rhomboidal, rounded or notched at the tip, thinly woody. Seeds with a distinct wing.
With cones 10–15 cm, occasionally escapes locally from cult.
