Tschonoski's hornbeam

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Tschonoski's hornbeam
Leaves of Tschonoski's hornbeam (Carpinus tschonoskii)

Leaves of Tschonoski's hornbeam ( Carpinus tschonoskii )

Systematics
Eurosiden I
Order : Beech-like (Fagales)
Family : Birch family (Betulaceae)
Subfamily : Hazelnut family (Coryloideae)
Genre : Hornbeam ( Carpinus )
Type : Tschonoski's hornbeam
Scientific name
Carpinus Tschonoskii
Maxim.

Tschonoskis hornbeam ( Carpinus tschonoskii ) is a small tree from the subfamily of the hazelnut family ( Coryloideae ). The natural range of the species is in Japan, Korea and China. The wood is rarely used economically.

description

Tschonoskis hornbeam is a tree up to 25 meters high with dark gray bark . The twigs are brown and initially sparsely shaggy with hair. The leaves have a 0.8 to 1.5 centimeter long, downy hairy stem. The leaf blade is 5 to 12 centimeters long and 2.5 to 5 centimeters wide, elliptical, oblong or ovate-lanceolate, long acuminate or tail-acuminate, with a more or less rounded to almost wedge-shaped base and an irregular, double-bristle serrated edge. 14 to 16 pairs of nerves are formed. Both sides of young leaves are shaggy hairy and later only sparsely shaggy hairy along the leaf veins, otherwise balding. The underside of the leaf shows armpit whiskers.

The female inflorescences are 6 to 10 inches long and 1 to 4 inches wide. The inflorescence axis is 1 to 4 inches long and sparsely hairy shaggy. The bracts are 3 to 3.5, rarely from 2.5 to 5 centimeters long, 0.8 to 1.2 centimeters wide, egg-shaped-lanceolate or sickle-shaped-lanceolate, pointed or long-pointed, with rolled-up auricles but without a lobe on the Base. The outer leaf margin is serrated, the inner part has entire margins. Four or five clearly visible leaf veins are formed. The upper side of the leaf is hairy sparsely, silky and shaggy along the network-like veins. As fruit 4 to 5 millimeters long and 3 to 4 millimeters wide, except for the sparsely hairy tip bald and clearly ribbed nutlets formed, which may be resinous sometimes. Tschonoskis hornbeam flowers from May to June, the fruits ripen from July to August.

The number of chromosomes is 2n = 64.

Occurrence and location requirements

The natural range is in Japan on Honshū , Kyushu and Shikoku ; in the Korean Peninsula and in China in the provinces of Anhui , Guangxi , Guizhou , in the west of Henan , in Hubei , Hunan , Jiangsu , Jiangxi , Sichuan , Yunnan and Zhejiang . Tschonoskis hornbeam grows in species-rich forests at altitudes of 1,100 to 2,400 meters on fresh to moist, acidic to neutral, sandy or loamy humus soils in sunny to partially shaded locations. The species tolerates warmth and is usually frost hardy . The distribution area is assigned to winter hardiness zone 5a with mean annual minimum temperatures of −28.8 to −26.1 ° C (−20 to −15 ° F).

Systematics

Tschonoskis hornbeam ( Carpinus tschonoskii ) is a species from the genus of hornbeams ( Carpinus ). This is in the family of birch plants of the subfamily (Betulaceae) coryloideae assigned (Coryloideae). The species was first scientifically described in 1882 by Karl Johann Maximowicz . The genus name Carpinus comes from Latin and was already used by the Romans for the hornbeam.

use

The wood of Tschonoski's hornbeam is rarely used economically.

proof

literature

  • 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. 298 (English).
  • 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. 160.
  • Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).

Individual evidence

  1. ↑ German name after Roloff et al .: Flora der Gehölze , p. 160
  2. ↑ a b c Pei-chun Li, Alexei K. Skvortsov: Carpinus tschonoskii , in the Flora of China , Volume 4, p. 298
  3. ↑ a b c d Roloff et al .: Flora der Gehölze , p. 160
  4. ^ Carpinus tschonoskii at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  5. ↑ a b c Carpinus tschonoskii. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 20, 2012 .
  6. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 130

Web links

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