Picea farreri

Picea farreri is a species of the pine family ( Pinaceae ). It is native in two river valleys in southern China and northern Myanmar.

Description

Picea farreri grows as evergreen tree that can reach heights of growth of up to 35 meters. The open crown is broad - conical in shape. It is made from straight or slightly downward branching from the core branches with drooping branches. The scaly bark is gray. The first hairy bark of the branches is olive-brown to pale orange colored brown and verkahlt with age.

The slightly frosted, blue-green needles are 1.5 to 2.5 inches long, have a pointed tip and are flattened. Your top is covered by a layer of white wax. On the underside of leaves there are two Stomatabänder, each with five to six Stomatalinien. The needles are straight off the branches.

The male cones are conical - cylindrical shape with a length of 2 to 2.5 centimeters and a thickness of about 3 millimeters. The pins are cylindrically shaped with a length of 6 to 10 cm and a thickness of 3-4 centimeters and are elliptical to a handle of 0 to 0.5 centimeter long. At maturity towards them are brown. The inverted egg-shaped seed scales are 0.8 to 1.2 centimeters long and 1 to 1.6 inches wide. The outer, rounded edges scales are bent inwardly. The seeds have a light brown wings with an irregular border and along with this approximately 1.6 inches long and 0.5 inches wide.

Distribution and location

The natural range of Picea farreri is located in China and Myanmar. It includes the valley, on the western Yunnan of Nu Jiang and the location in the northern Myanmar valley of the Fen Shui Ling.

Picea farreri thrives at altitudes from 2400 to 2700 meters. At least in Myanmar, the species grows on moist soils which have formed on limestone. The cool climate is characterized by heavy monsoon rain. The species forms small pure stands within open forests.

System

Picea farreri is within the genre of spruce (Picea ) the subgenus Picea and the Section Omorikae assigned.

The first description as Picea farreri was made in 1980 by Christopher Nigel Page and KD Rushforth in Notes from the Royal Botanic Garden, Edinburgh, Volume 38 ( 1), page 130

Threats and conservation

Picea farreri is classified as " critically endangered " in the IUCN Red List. The main hazard timber felling and habitat loss associated are called. However, no statement can be made ​​about the exact situation because it is not possible to visit populations of the species in their natural habitat. It is also noted that a re-examination of risk is necessary.

Swell

  • Christopher J. Earle: Picea farreri. In: The Gymnosperm Database. www.conifers.org, November 23, 2012, accessed on 17 March 2013 ( English).
  • Liguo Fu, Nan Li, Thomas S. Elias & Robert R. Mill: Pinaceae. Picea. In: Wu Zhengyi, Peter H. Raven & Hong Deyuan (eds.): Flora of China. Cycadaceae through Fagaceae. Volume 4, Science Press and Missouri Botanical Garden Press, Beijing and St. Louis in 1999, ISBN 0-915279-70-3, Picea farreri, p.32 ( this printed work is the same text online, Picea farreri - Online).
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