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Nothotsuga longibracteata


Nothotsuga longibracteata - Bristlecone hemlock description


 

Scientific name: Nothotsuga longibracteata  (W.C.Cheng) H.H.Hu ex C.N.Page  1989

Synonyms: Nothotsuga×tsugo-keteleeria (W.C. Cheng) Van Campo & Gaussen, Tsuga longibracteata W.C.Cheng, ×Tsugo-keteleeria longibracteata (W.C.Cheng) Van Campo & Gaussen    

Common names: Bristlecone hemlock (English), Chang bao tie shan (Chinese)

 

Description

Erect or shrubby tree to 8-30 m tall, with trunk to 0.3-1.2 m in diameter. Bark brownish gray, rough, scaly, becoming furrowed with age. Crown conical at first, becoming flat-topped with age. Twigs yellowish brown or reddish brown, usually hairless but sometimes thinly hairy. Winter buds pointed, 2-4 mm long. Needles fairly uniform in length, 1.1-2.4 cm long, parallel-sided, the edge smooth, the tip bluntly pointed, with 5-12 stomatal lines above and two broad greenish white stomatal bands beneath. Pollen cones 5-10 mm long, yellow. Seed cones 2-5(-6) cm long on stalks 5-10 mm long, opening to 1.5-2.5(-3) cm wide, reddish purple before maturity, ripening dark brown. Seed scales 10-15(-22) mm long, broader than long. Bracts spoon-shaped, 7-18 mm long, visible among the seed scales but not protruding far. Seeds 4-8 mm long, the firmly attached wing another 6-12 mm longer.

South-central China, from Guangxi and northeastern Guizhou to southern Fujian. Scattered in groups on moist mountains in broad-leaved evergreen or mixed forest; (300-)1,000-2,300(-3,200) m.

 

Conservation Status

Red List Category & Criteria: Near Threatened

 

Varieties: -

 

Attribution from: Conifers Garden


 

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