Abies forrestii

Abies forrestii is a species of the genus of fir (Abies ) in the pine family ( Pinaceae ). The home of this conifer is located in China. It is named after George Forrest ( 1873-1932 ).

• 6.1 Notes and references

Description

Abies forrestii grows as a evergreen tree that can reach heights of growth of up to 20 meters. The bark is dark gray and scrolls normally starting. The bark of the branches is initially hairy and has a reddish-brown to brown coloration, with age it darkens until it is dark gray after two to three years. The resinous winter buds are globose to obovate.

The comb- like arranged in two rows of needles on the branches 1.5 to 4, but usually 2 to 3 inches in length and 2 to 2.5 mm wide. At the needle bottom you will find two white Stomatabänder and at the edges, there are two resin canals.

The flowering period is in May. The sessile, seated pins are cylindrical to obtuse - cylindrical with a length of 7 to 12 inches and a diameter of 3.5 to 6 inches. The mature cones are dark purple- brown to black-brown. The person sitting in the middle of the pin deck scales are fan-like trapezoidal, 1.3 to 2 inches long and 1.3 to 2.3 inches wide. The winged seeds are about 1 centimeter long. The wing of the seed is light brown to reddish brown and broadly wedge -shaped. The seed maturation takes place from October to November.

Distribution and location

Abies forrestii is native to western China. Your deposit is located in the southwestern Sichuan, eastern Xizang and the northwestern Yunnan.

It comes in mountain regions before at altitudes 2500-4200 meters. The climate of their home base is damp cold with an annual rainfall of 1000 to 2000 millimeters, the floors are gray-brown podzolic soils. Abies forrestii comes here often as the only species on the tree line before, but is also associated with the Likiang spruce (Picea likiangensis ), Larix potaninii, the Himalayan Hemlock ( Tsuga dumosa ) and albosinensis at lower altitudes with deciduous tree species such as Betula, maples ( Acer) and flour berries ( Sorbus ) encountered.

Threats and conservation

In the IUCN Red List Abies forrestii is considered "at risk not " out. It is noted, however, that a re-examination of risk is necessary.

System

Abies forrestii is allocated within the genus of fir (Abies ) of section Pseudopicea and the subsection Delavayianae. The name was first published today recognized by Charles Coltman - Rogers in the Gardeners' Chronicle in March 1919. In the same year, however, a few months later there appeared a description under the same botanical name by William Grant Craib. .

Abies forrestii was formerly partially viewed as a variety of Delavays Fir ( Abies delavayi ), which it resembles. Synonyms include Abies delavayi var forrestii ( Coltm. - Rog. ) ABJacks. and Abies Georgei Hand. - Mazz.

Varieties

Abies forrestii is sometimes divided into four varieties:

• Abies forrestii var chengii ( Rushforth ) Silba. A synonym is Abies chengii Rushforth
• Abies forrestii var ferreana ( Bordères et Gaussen ) Farjon et Silba. Synonyms include Abies chayuensis WCCheng et LKFu, Abies ferreana Bordères et Gaussen, Abies rolii Bordères et Gaussen and Abies yuana Bordères et Gaussen
• Abies forrestii var Georgei ( Orr ) Farjon. A synonym is Abies Georgei Orr
• Abies smithii var forrestii R.Vig. et Gaussen

Use

The wood is used as timber. From the bark tannin is extracted.

Swell

• Template: Internet resource / maintenance / access date not in ISO format Christopher J. Earle: Abies forrestii. In: The Gymnosperm Database. www.conifers.org, accessed on 14 January 2011 (English).
• Liguo Fu, Nan Li, Thomas S. Elias, Robert R. Mill: Abies. In: Wu Zheng -yi, Peter H. Raven (eds.): Flora of China. Volume 4: Cycadaceae through Fagaceae, Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3, pp. 11, online.
• Cheers Gordon (ed.): Botanica. The ABC's of plants. 10,000 species in text and image. Könemann, Cologne 2003, ISBN 3-8331-1600-5.