Calocedrus

California incense cedar ( Calocedrus decurrens ) branch with ripe female cones.

The incense cedar ( Calocedrus ) are a genus of flowering plants in the subfamily Cupressoideae within the family of the cypress family ( Cupressaceae ). The approximately four species come from the western U.S. to Mexico and in Asia.

Description

Incense cedars are evergreen trees that reach a growth rate of 15 to 46 ( rarely 57) meters and can have a trunk diameter of 1.0 to 1.5 (rarely 3.6 ) meters. The thick bark they are relatively resistant to fire. The scale-like leaves are up to 3 mm long.

Incense cedar are getrenntgeschlechtig, mostly monoecious ( monoecious ), or rarely dioecious ( dioecious ). Female and male cones are located on different branches. The male cones are elongated. The woody female cones are oval and are 17 to 30 mm. Per fertile pin - scale, two winged seeds develop, with a long and a short wing. The pollen in the spring, and the seed maturation takes place in the same year. The seedlings have two seed leaves ( cotyledons ).

Dissemination

The individual types of areas both in the Western United States and Mexico, as well as in Myanmar, China, Taiwan and Vietnam. (For more information about the distribution of the various species. )

System

The genus Calocedrus in 1873 erected by William Sulpiz short in Journal of Botany, British and Foreign, 11, p 196. Synonyms for Calocedrus are short Heyderia K.Koch and Libocedrus sensu Benth. et Hook. The botanical genus name is derived from the Greek Calocedrus words: kallos for " beautiful" and Kedros for " cedar " from.

In the genus incense cedars ( Calocedrus ), there are about four types:

• California incense cedar ( Calocedrus decurrens ( Torr. ) Florin ): Native to the western United States and Mexico in the mountains at high altitude 300-2800 meters. The timber of this type has been used in North America for a long time to produce pencils.
• Formosa incense cedar ( Calocedrus formosana ( Florin ) Florin ): The home is only Taiwan: In the northern and central areas of the island at altitudes 33-1900 meters.
• Chinese incense cedar ( Calocedrus macrolepis short ): The areas are in: Myanmar ( known as Burma and Burma), China in the provinces: about Guangxi, Guizhou, Hainan and Yunnan at altitudes 300-2000 m, and Vietnam at elevations 900 meters in evergreen subtropical forests.
• Calocedrus rupestris Aver, THNguyen & PKLoc. Occurs in Vietnam. Was first described in 2004.

Use

In the home countries and many other countries of the world they are used as ornamental plants.

The weather-resistant wood is used for example for furniture production.

Swell

• Christopher J. Earle: Calocedrus short. on: conifers.org (Section Description, distribution and systematics)
• Liguo Fu Yong -fu Yu, Robert P. Adams, Aljos Farjon: Cupressaceae. Calocedrus. 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, Calocedrus, pp. 64-65 ( Calocedrus - online).
• Walter Erhardt et al: The big walleye. Encyclopedia of plant names. Volume 2 Eugen Ulmer Verlag, Stuttgart, 2008. ISBN 978-3-8001-5406-7