Tree, up to 40 meters high; bark rough, dark gray or dark gray brown, cracked in lumps; winter buds oval or nearly round, with resin; annual branches reddish brown or slightly purple, slightly Grooved, hairless, with sparse short hairs in the grooves. The leaves are arranged in two rows under the branches. The upper leaves are spread obliquely or upright, and the upper central leaves are sparse and recurved backwards. They are strip-shaped, with the upper part wider than the lower part, 1-3 cm long (mostly 1.7-2.2 cm) and wide. 1.5-4 mm, straight or slightly curved, blunt and notched apex, sparsely pointed, dark green and shiny above, without stomata line, below there are 2 pinkish-white stomata bands along both sides of the midrib; cross section from above to both sides below There is a layer of continuously arranged subcutaneous cells on the edge, two layers at the ends and corners, one layer in the middle below, and two resin ducts in the middle.

The cones are columnar, oblong or cylindrical, 5-8 cm long, 3-4 cm in diameter, lavender, purple-black or reddish brown when mature; the middle part is kidney-shaped or fan-shaped, 0.8-1.2 cm long, 1.5-2 cm wide, broad and thick at the upper part, with incurved edges; bract scales are obovate and wedge-shaped, with rounded upper parts, finely toothed edges, and a sharp short tip at the apex, with the tip exposed or slightly exposed ; The seeds are inverted triangular and oval, and the seed wings are wedge-shaped, shorter or equal in length than the seeds.