Juniperus saltuaria

The Sichuan - juniper (Juniperus saltuaria ) is a plant from the family of cypress family ( Cupressaceae ). It is native to central China.

Description

The Sichuan - juniper grows as a evergreen tree, rarely a shrub that can reach heights of growth of up to 20 meters. The branches go straight or ascending from the tribe. The bent twigs are 1 to 1.7 mm thick and have a quadrilateral cross -section.

The Sichuan - juniper both needle-like and scale-like leaves from where the needles are to be found primarily on young trees. The needle-like leaves are 4.5 to 6 millimeters long and Dreierwirteln are on the branches. They are grooved on the bottom and the leaf tip is pointed. The arched shed leaves are triangular- shaped diamond-shaped with a length 1-2 millimeters. Is located at the base of the underside of leaves an inconspicuous, spherical or egg-shaped leaf gland and the slightly indented tip is blunt.

The Sichuan - juniper is monoecious getrenntgeschlechtig ( monoecious ). The male cones are approximately spherically shaped, with a length of about 2 millimeters. They have six to eight Mikrosporophylle which carry two or three pollen sacs. The upstanding female cones are approximately oval shaped in a diameter of 0.4 to 1 cm to approximately spherical. At maturity towards them are bluish black in color to black. Each pin carries a seed. The ridged and pitted seeds are irregularly spherical, ovoid - shaped, with a length from 3.5 to 7 millimeters and a width of 3 to 5 millimeters.

Occurrence and risk

The natural range of the Sichuan juniper, located in central China in the provinces of southern Gansu, southeastern Qinghai, western Sichuan, eastern Xizang and northwestern Yunnan.

The Sichuan - juniper grows at altitudes 2700-4600 meters mainly in forests and thickets.

The Sichuan - juniper is " not endangered" than in the IUCN Red List. Since the last survey carried out in 1998 is noted, however, that a re-examination of risk is necessary.

System

The first description as Juniperus saltuaria took place in 1914 by Alfred Rehder and Ernest Henry Wilson in Plantae Wilsonianae. An enumeration of the woody plants collected in western China for the Arnold Arboretum of Harvard University falling on the years 1907, 1908 and 1910 by EH Wilson edited by Charles Sprague Sargent, Volume 2 (1 ), pp. 61-62. A synonym for Juniperus saltuaria Rehder & EHWilson is Sabina saltuaria ( Rehder & EHWilson ) WCCheng & WTWang.

Swell

• Christopher J. Earle: Juniperus saltuaria. In: The Gymnosperm Database. www.conifers.org, November 23, 2012, accessed on January 1, 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 saltuaria, p.76 ( this printed work is the same text online, Juniperus saltuaria - Online).