|Shensi Fir - Abies chensiensis|
Family Pinaceae: Pine, Cedar, Spruce, Fir
Commonly called Shensi fir, 秦岭冷杉 qin ling leng shan in Chinese, grows to 50 meters
Leaves pectinately arranged in 2 lateral sets, dark green adaxially, linear, flattened, 1.5-4.8 cm × 2.5-3 mm, twisted at base, grooved above; stomata in two broad bands divided by a midrib below; resin canals 2, marginal or median on cone-bearing branchlets, apex variable. 
Shensi Fir is native to China; S Shaanxi, W Hubei (highlands), S Gansu, W Sichuan, SW Henan (Neixiang Xian) (Fu et al. 1999); Farjon 1990 also places it in SE Xizang and NW Yunnan, and India: Arunachal Pradesh. It grows primarily in cold, moist forests between 2100-3500 meters.
Grows to 50 meters and 250 cm DBH (diameter at breast height, formally 4.5 feet in the U.S.) The timber is light in weight, soft, fine grained, and used for construction. 
Shensi fir, from seed, is 18 years old 
The male and female cones are borne separately on the same tree; pollination is in early spring. The male cones are solitary, yellow, globose to oblong, 4-8 mm diameter. The mature female cones are ovoid-conic, 2-4 cm long, with 30-70 erect or slightly incurved (not reflexed) and downy seed scales; they are green when immature, turning brown and opening to release the winged seeds when mature, 6 months after pollination. The old cones commonly remain on the tree for many years, turning dull grey-black. The minimum seed-bearing age is 10 years.
1. The Gymnosperm Database, Abies chensiensis Van Tieghem 1892
2. www.eFloras.org, Flora of China, Abies chensiensis Tieghem, Bull. Soc. Bot. France. 38: 413. 1892.
|Tree Encyclopedia / North American Insects & Spiders is dedicated to providing scientific and educational resources for our users through use of large images and macro photographs of flora and fauna.|
Tree Encyclopedia | Tree Index
Trees live longer than any other organism on earth. Trees commonly live more than 1,000 years, and many grow considerably older. Trees have been living on Earth for more than 370 million years, and today can be found almost everywhere from the Arctic Circle to the Sahara Desert. Explore over 2,000 large format pictures of trees in more than 400 species. Family Pinaceae: Pine, Cedar, Spruce, and Fir