Chinese hazel
| Chinese hazel | ||||||||||||
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Habitus |
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| Corylus chinensis | ||||||||||||
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The Chinese hazel or Chinese hazelnut ( Corylus chinensis ) is a small deciduous tree from the birch family . The distribution area is in central and west China.
description
The Chinese hazel is a tree up to 40 meters high with a gray-brown, cracked bark and glandular, hairy, reddish young shoots that later become bald. The leaves have a 1 to 2.5 cm long, shaggy and hairy stalk. The leaf blade is 8 to 18 centimeters long and 6 to 12 centimeters wide, ovate to oblong ovoid, pointed with a slate, heart-shaped base and double-serrate, non-lobed leaf margin . Seven to eleven pairs of nerves are formed, the nerves on the underside of the leaf are hairy. The male kittens stand in groups of four to six. They are cylindrical, 1.5 to 2 inches long and hairy. The female inflorescences are in groups of two to six. They become 2 to 6 inches long. The nuts are spherical, 1 to 1.5 centimeters thick and surrounded by a striped, fine-haired shell that is narrowed over the nut and has a toothed top.
Distribution and location
The distribution area is in the temperate zone of China in the provinces of Gansu , Guizhou , Hubei , Shaanxi , Sichuan and Yunnan . There it grows in floodplains, on river banks or in species-rich forests at altitudes of 1200 to 3500 meters on fresh to moist, slightly acidic to alkaline, good mostly loamy soils in sunny to partially shaded locations. The species loves warmth and is usually frost hardy.
In the Red List of the IUCN , the Chinese hazel is as endangered ( "endangered") out. The population of mature trees is declining. The main reasons for this are overexploitation , loss of habitat and poor regeneration of the population.
Systematics
The Chinese hazel ( Corylus chinensis ) is a kind from the kind of hazel ( Corylus ) in the family of the birch family (Betulaceae). It is assigned to the Corylus section , Colurnae subsection . It was first described in 1899 by Adrien René Franchet . It resembles the tree hazel ( Corylus colurna ) and was temporarily regarded as a variety of this species under the name Corylus colurna var. Chinensis .
use
The Chinese hazel is only rarely used in forestry. It is used as an ornamental plant because of its fruits and also serves as a bee pasture.
proof
literature
- Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , p. 223.
- Steve Cafferty: Cosmos Atlas Trees of the World . Franckh-Kosmos, Stuttgart 2008, ISBN 978-3-440-10983-0 , p. 138 .
- Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 4: Cycadaceae through Fagaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3 , pp. 288 (English).
Individual evidence
- ↑ German name after Steve Cafferty: Kosmos-Atlas trees of the world
- ↑ German name after Roloff et al .: Flora of the woods
- ↑ a b c Roloff et al .: Flora of the Woods , p. 223
- ^ A b Liguo Fu, Nan Li, Thomas S. Elias, Robert R. Mill: Corylus chinensis . In: Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 4: Cycadaceae through Fagaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3 , pp. 288 (English).
- ↑ Corylus chinensis. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed January 28, 2012 .
- ↑ Corylus chinensis in the endangered Red List species the IUCN 2011. Posted by: W. Sun, 1998. Accessed January 28, 2012 Design.
- ↑ Corylus colurna var. Chinensis. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed January 28, 2012 .
- ↑ Cafferty: Kosmos-Atlas Trees of the World , p. 138
