Juniperus tibetica

The Tibetan juniper (Juniperus tibetica ) is a plant from the family of cypress family ( Cupressaceae ). It is native to China.

Description

The Tibet - juniper grows as evergreen trees rarely a shrub, can achieve the stature heights of up to 30 meters. The branches are tightly or loosely arranged on the branches and have a round or square cross-section.

There are trained two forms of leaves. The needle-like leaves are found on seedlings and young trees. They are 4-8 mm long and stand together in Dreierwirteln. The scale leaves are oval to rhomboid shaped with a length of 1 to 3 mm and are decussate, sometimes in Dreierwirteln on the branches. Your tip is blunt and is located in the middle of the underside of leaves a striking, linear- elliptic to linear shaped leaf gland.

The Tibet - juniper is monoecious - getrenntgeschlechtig ( monoecious ), rarely dioecious ( dioecious ). The male cones are approximately spherically shaped with a diameter of about 2 millimeters. They have six to eight Mikrosporophylle which carry two or three pollen sacs. The upstanding female pins are oval shaped to Beer approximately spherical, with a length from 0.9 to 1.6 centimeters and a thickness of from 0.7 to 1.3 centimeters. For ripening turns they are brown or black in color to purple- black. Each tapped bears a seed. The seeds are ovate, rarely obovate or globose shaped with a length of 7-11 mm and a width of 6-8 mm and have resin pits on.

Distribution and location

The natural range of the Tibetan juniper is located in China. It includes where the south Gansu, southern Qinghai, Sichuan and eastern and southern Tibet Autonomous Region.

The Tibet - juniper grows at altitudes 2700-4800 meters. It is mainly found in forests which grow on hillsides and in mountain valleys.

Use

The wood of the Tibet - juniper used.

System

The first description as Juniperus tibetica was made in 1924 by Vladimir Leontyevich Komarov in Botanicheskie Materialy Gerbariya Glavnogo Botanicheskogo Sada RSFSR, Volume 5, page 27 synonyms for Juniperus tibetica Kom are Juniperus distans Florin, Juniperus potaninii Kom, Juniperus zaidamensis Kom and Sabina tibetica ( Kom ) WC Cheng & L.K. Fu.

Threats and conservation

The Tibet - juniper is " not endangered" than in the IUCN Red List. It is noted, however, that a re-examination of risk is necessary.

Swell

• Christopher J. Earle: Juniperus tibetica. In: The Gymnosperm Database. www.conifers.org, November 27, 2012, accessed January 3, 2013 ( English).
• Liguo Fu Yong -fu Yu, Robert P. Adams & Aljos Farjon: Cupressaceae. Juniperus. 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, Juniperus tibetica, p.76 ( this printed work is the same text online, Juniperus tibetica - Online).