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IUCN threat status:

Least Concern (LC)

Comprehensive Description

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General Description

Trees to 25 m or more; crown moderately open, not twiggy; branches spreading, drooping, sinuous; 1st-year branchlets conspicuously whitish bloomed, glandular pubescent; 2nd-year branchlets with thin, pale gray-green bark. Needles shed in 2nd year, 5 per bundle, pendulous, very slender, curved, triangular in cross section, 15-24 cm, adaxial surface grass green with no stomata, 2 abaxial surfaces conspicuously whitish bloomed, each with 4-7 stomatal lines, resin canals 3 or 4, adaxial 2 marginal or submarginal, abaxial 1 or 2 marginal or submarginal and always asymmetrically placed. Seed cones pedunculate 4.5-6 cm, elongate-cylindric, 12-20 cm long, 3-4 cm wide (5-7 cm wide when open). Seed scales rather elongate, thinly woody, base cuneate; apophyses rhombic, 1-1.5 cm long, 1.5-2.5 cm wide, keeled, apex subacute. Seeds brown, obovoid, compressed, 6-8 mm long, 4-5 mm wide; wing persistent, ca. 2 cm long, 0.7-1 cm wide.

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© Wen, Jun

Source: Plants of Tibet

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